TY  - JOUR
AU  - Vasiljević, Jadranka
AU  - Jovanović, Vladimir P.
AU  - Tomović, Aleksandar
AU  - Timotijević, Dejan
AU  - Žikić, Radomir
AU  - Belic, Milivoj
AU  - Jović-Savić, Dragana M.
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2147
AB  - We demonstrate transitional dimensionality of discrete diffraction in radial-elliptical photonic lattices. Varying the order, characteristic structure size, and ellipticity of the Mathieu beams used for the photonic lattices generation, we control the shape of discrete diffraction distribution over the combination of the radial direction with the circular, elliptic, or hyperbolic. We also investigate the transition from one-dimensional to two-dimensional discrete diffraction by varying the input probe beam position. The most pronounced discrete diffraction is observed along the crystal anisotropy direction.
PB  - Optica Publishing Group
T2  - Optics Express
T1  - Interdimensional radial discrete diffraction in Mathieu photonic lattices
EP  - 28953
IS  - 18
SP  - 28946
VL  - 31
DO  - 10.1364/OE.497795
ER  - 

@article{
author = "Vasiljević, Jadranka and Jovanović, Vladimir P. and Tomović, Aleksandar and Timotijević, Dejan and Žikić, Radomir and Belic, Milivoj and Jović-Savić, Dragana M.",
year = "2023",
abstract = "We demonstrate transitional dimensionality of discrete diffraction in radial-elliptical photonic lattices. Varying the order, characteristic structure size, and ellipticity of the Mathieu beams used for the photonic lattices generation, we control the shape of discrete diffraction distribution over the combination of the radial direction with the circular, elliptic, or hyperbolic. We also investigate the transition from one-dimensional to two-dimensional discrete diffraction by varying the input probe beam position. The most pronounced discrete diffraction is observed along the crystal anisotropy direction.",
publisher = "Optica Publishing Group",
journal = "Optics Express",
title = "Interdimensional radial discrete diffraction in Mathieu photonic lattices",
pages = "28953-28946",
number = "18",
volume = "31",
doi = "10.1364/OE.497795"
}

Vasiljević, J., Jovanović, V. P., Tomović, A., Timotijević, D., Žikić, R., Belic, M.,& Jović-Savić, D. M.. (2023). Interdimensional radial discrete diffraction in Mathieu photonic lattices. in Optics Express
Optica Publishing Group., 31(18), 28946-28953.
https://doi.org/10.1364/OE.497795

Vasiljević J, Jovanović VP, Tomović A, Timotijević D, Žikić R, Belic M, Jović-Savić DM. Interdimensional radial discrete diffraction in Mathieu photonic lattices. in Optics Express. 2023;31(18):28946-28953.
doi:10.1364/OE.497795 .

Vasiljević, Jadranka, Jovanović, Vladimir P., Tomović, Aleksandar, Timotijević, Dejan, Žikić, Radomir, Belic, Milivoj, Jović-Savić, Dragana M., "Interdimensional radial discrete diffraction in Mathieu photonic lattices" in Optics Express, 31, no. 18 (2023):28946-28953,
https://doi.org/10.1364/OE.497795 . .

TY  - CONF
AU  - Vasiljević, Jadranka M.
AU  - Timotijević, Dejan
AU  - Jović Savić, Dragana M.
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3007
AB  - We present the numerical modeling of two different randomization methods of photonic lattices. We compare the results of light propagation in disordered aperiodic and disordered periodic lattices. In disordered aperiodic lattice disorder always enhances light transport for both methods, contrary to the disordered periodic lattice. For the highest disorder levels, we detect Anderson localization for both methods and both disordered lattices. More pronounced localization is observed for disordered aperiodic lattice.
PB  - EDP Sciences
C3  - EPJ Web of Conferences
T1  - Light propagation in disordered aperiodic Mathieu photonic lattices
DO  - https://doi.org/10.1051/epjconf/202226608015
ER  - 

@conference{
author = "Vasiljević, Jadranka M. and Timotijević, Dejan and Jović Savić, Dragana M.",
year = "2022",
abstract = "We present the numerical modeling of two different randomization methods of photonic lattices. We compare the results of light propagation in disordered aperiodic and disordered periodic lattices. In disordered aperiodic lattice disorder always enhances light transport for both methods, contrary to the disordered periodic lattice. For the highest disorder levels, we detect Anderson localization for both methods and both disordered lattices. More pronounced localization is observed for disordered aperiodic lattice.",
publisher = "EDP Sciences",
journal = "EPJ Web of Conferences",
title = "Light propagation in disordered aperiodic Mathieu photonic lattices",
doi = "https://doi.org/10.1051/epjconf/202226608015"
}

Vasiljević, J. M., Timotijević, D.,& Jović Savić, D. M.. (2022). Light propagation in disordered aperiodic Mathieu photonic lattices. in EPJ Web of Conferences
EDP Sciences..
https://doi.org/https://doi.org/10.1051/epjconf/202226608015

Vasiljević JM, Timotijević D, Jović Savić DM. Light propagation in disordered aperiodic Mathieu photonic lattices. in EPJ Web of Conferences. 2022;.
doi:https://doi.org/10.1051/epjconf/202226608015 .

Vasiljević, Jadranka M., Timotijević, Dejan, Jović Savić, Dragana M., "Light propagation in disordered aperiodic Mathieu photonic lattices" in EPJ Web of Conferences (2022),
https://doi.org/https://doi.org/10.1051/epjconf/202226608015 . .

TY  - JOUR
AU  - Timotijević, Dejan
AU  - Vasiljević, Jadranka M.
AU  - Jović-Savić, Dragana M.
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1525
AB  - We introduce numerical modeling of two different methods for the deterministic randomization of two-dimensional aperiodic photonic lattices based on Mathieu beams, optically induced in a photorefractive media. For both methods we compare light transport and localization in such lattices along the propagation, for various disorder strengths. A disorder-enhanced light transport is observed for all disorder strengths. With increasing disorder strength light transport becomes diffusive-like and with further increase of disorder strength the Anderson localization is observed. This trend is more noticeable for longer propagation distances. The influence of input lattice intensity on the localization effects is studied. The difference in light transport between two randomization methods is attributed to various levels of input lattice intensity. We observe more pronounced localization for one of the methods. Localization lengths differ along different directions, due to the crystal and lattice anisotropy. We analyze localization effects comparing uniform and on-site probe beam excitation positions and different probe beam widths.
PB  - Optical Soc Amer, Washington
T2  - Optics Express
T1  - Numerical methods for generation and characterization of disordered aperiodic photonic lattices
EP  - 7224
IS  - 5
SP  - 7210
VL  - 30
DO  - 10.1364/OE.447572
ER  - 

@article{
author = "Timotijević, Dejan and Vasiljević, Jadranka M. and Jović-Savić, Dragana M.",
year = "2022",
abstract = "We introduce numerical modeling of two different methods for the deterministic randomization of two-dimensional aperiodic photonic lattices based on Mathieu beams, optically induced in a photorefractive media. For both methods we compare light transport and localization in such lattices along the propagation, for various disorder strengths. A disorder-enhanced light transport is observed for all disorder strengths. With increasing disorder strength light transport becomes diffusive-like and with further increase of disorder strength the Anderson localization is observed. This trend is more noticeable for longer propagation distances. The influence of input lattice intensity on the localization effects is studied. The difference in light transport between two randomization methods is attributed to various levels of input lattice intensity. We observe more pronounced localization for one of the methods. Localization lengths differ along different directions, due to the crystal and lattice anisotropy. We analyze localization effects comparing uniform and on-site probe beam excitation positions and different probe beam widths.",
publisher = "Optical Soc Amer, Washington",
journal = "Optics Express",
title = "Numerical methods for generation and characterization of disordered aperiodic photonic lattices",
pages = "7224-7210",
number = "5",
volume = "30",
doi = "10.1364/OE.447572"
}

Timotijević, D., Vasiljević, J. M.,& Jović-Savić, D. M.. (2022). Numerical methods for generation and characterization of disordered aperiodic photonic lattices. in Optics Express
Optical Soc Amer, Washington., 30(5), 7210-7224.
https://doi.org/10.1364/OE.447572

Timotijević D, Vasiljević JM, Jović-Savić DM. Numerical methods for generation and characterization of disordered aperiodic photonic lattices. in Optics Express. 2022;30(5):7210-7224.
doi:10.1364/OE.447572 .

Timotijević, Dejan, Vasiljević, Jadranka M., Jović-Savić, Dragana M., "Numerical methods for generation and characterization of disordered aperiodic photonic lattices" in Optics Express, 30, no. 5 (2022):7210-7224,
https://doi.org/10.1364/OE.447572 . .

TY  - JOUR
AU  - Vasiljević, Jadranka M.
AU  - Zannotti, Alessandro
AU  - Timotijević, Dejan
AU  - Denz, Cornelia
AU  - Jovic-Savić, Dragana M.
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1523
AB  - Complex optical systems such as deterministic aperiodic Mathieu lattices are known to hinder light diffraction in a manner comparable to randomized optical systems. We systematically incorporate randomness in our complex optical system, measuring its relative contribution of randomness, to understand the relationship between randomness and complexity. We introduce an experimental method for the realization of disordered aperiodic Mathieu lattices with numerically controlled disorder degree. Added disorder always enhances light transport. For lower disorder degrees, we observe diffusive-like transport, and in the range of highest light transport, we detect Anderson localization. With further increase of disorder degree, light transport is slowly decreasing and localization length decreases indicating more pronounced Anderson localization. Numerical investigation at longer propagation distances indicates that the threshold of Anderson localization detection is shifted to lower disorder degrees.
PB  - Optical Soc Amer, Washington
T2  - Optics Letters
T1  - Light transport and localization in disordered aperiodic Mathieu lattices
EP  - 705
IS  - 3
SP  - 702
VL  - 47
DO  - 10.1364/OL.445779
ER  - 

@article{
author = "Vasiljević, Jadranka M. and Zannotti, Alessandro and Timotijević, Dejan and Denz, Cornelia and Jovic-Savić, Dragana M.",
year = "2022",
abstract = "Complex optical systems such as deterministic aperiodic Mathieu lattices are known to hinder light diffraction in a manner comparable to randomized optical systems. We systematically incorporate randomness in our complex optical system, measuring its relative contribution of randomness, to understand the relationship between randomness and complexity. We introduce an experimental method for the realization of disordered aperiodic Mathieu lattices with numerically controlled disorder degree. Added disorder always enhances light transport. For lower disorder degrees, we observe diffusive-like transport, and in the range of highest light transport, we detect Anderson localization. With further increase of disorder degree, light transport is slowly decreasing and localization length decreases indicating more pronounced Anderson localization. Numerical investigation at longer propagation distances indicates that the threshold of Anderson localization detection is shifted to lower disorder degrees.",
publisher = "Optical Soc Amer, Washington",
journal = "Optics Letters",
title = "Light transport and localization in disordered aperiodic Mathieu lattices",
pages = "705-702",
number = "3",
volume = "47",
doi = "10.1364/OL.445779"
}

Vasiljević, J. M., Zannotti, A., Timotijević, D., Denz, C.,& Jovic-Savić, D. M.. (2022). Light transport and localization in disordered aperiodic Mathieu lattices. in Optics Letters
Optical Soc Amer, Washington., 47(3), 702-705.
https://doi.org/10.1364/OL.445779

Vasiljević JM, Zannotti A, Timotijević D, Denz C, Jovic-Savić DM. Light transport and localization in disordered aperiodic Mathieu lattices. in Optics Letters. 2022;47(3):702-705.
doi:10.1364/OL.445779 .

Vasiljević, Jadranka M., Zannotti, Alessandro, Timotijević, Dejan, Denz, Cornelia, Jovic-Savić, Dragana M., "Light transport and localization in disordered aperiodic Mathieu lattices" in Optics Letters, 47, no. 3 (2022):702-705,
https://doi.org/10.1364/OL.445779 . .

TY  - JOUR
AU  - Curcic, M
AU  - Hadzic, B.B
AU  - Gilic, M
AU  - Radojevic, I
AU  - Bjelajac, Andjelika
AU  - Radovic, Ivana
AU  - Timotijević, Dejan
AU  - Romcevic, Maja
AU  - Trajic, Jelena
AU  - Romcevic, Nebojsa
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3045
AB  - The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.
PB  - ELSEVIER
T2  - Physica E: Low-Dimensional Systems and Nanostructures
T1  - Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites
VL  - 115
DO  - https://doi.org/10.1016/j.physe.2019.113708
ER  - 

@article{
author = "Curcic, M and Hadzic, B.B and Gilic, M and Radojevic, I and Bjelajac, Andjelika and Radovic, Ivana and Timotijević, Dejan and Romcevic, Maja and Trajic, Jelena and Romcevic, Nebojsa",
year = "2020",
abstract = "The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.",
publisher = "ELSEVIER",
journal = "Physica E: Low-Dimensional Systems and Nanostructures",
title = "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites",
volume = "115",
doi = "https://doi.org/10.1016/j.physe.2019.113708"
}

Curcic, M., Hadzic, B.B, Gilic, M., Radojevic, I., Bjelajac, A., Radovic, I., Timotijević, D., Romcevic, M., Trajic, J.,& Romcevic, N.. (2020). Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E: Low-Dimensional Systems and Nanostructures
ELSEVIER., 115.
https://doi.org/https://doi.org/10.1016/j.physe.2019.113708

Curcic M, Hadzic B, Gilic M, Radojevic I, Bjelajac A, Radovic I, Timotijević D, Romcevic M, Trajic J, Romcevic N. Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E: Low-Dimensional Systems and Nanostructures. 2020;115.
doi:https://doi.org/10.1016/j.physe.2019.113708 .

Curcic, M, Hadzic, B.B, Gilic, M, Radojevic, I, Bjelajac, Andjelika, Radovic, Ivana, Timotijević, Dejan, Romcevic, Maja, Trajic, Jelena, Romcevic, Nebojsa, "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites" in Physica E: Low-Dimensional Systems and Nanostructures, 115 (2020),
https://doi.org/https://doi.org/10.1016/j.physe.2019.113708 . .

TY  - JOUR
AU  - Vasiljević, Jadranka M.
AU  - Zannotti, Alessandro
AU  - Timotijević, Dejan
AU  - Denz, Cornelia
AU  - Jović Savić, Dragana M
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3036
AB  - We investigate light propagation in a two-dimensional aperiodic refractive index lattice realized using the interference of multiple Mathieu–Gauss beams. We demonstrate experimentally and numerically that such a lattice effectively hinders linear light expansion and leads to light localization, compared to periodic photonic lattices in a photorefractive crystal. Most promisingly, we show that such an aperiodic lattice supports the nonlinear confinement of light in the form of soliton-like propagation that is robust with respect to changes in a wide range of intensities.
PB  - Appl. Phys. Lett.
T2  - Applied Physics Letters
T1  - Light propagation in aperiodic photonic lattices created by synthesized Mathieu–Gauss beams
VL  - 117
DO  - https://doi.org/10.1063/5.0013174
ER  - 

@article{
author = "Vasiljević, Jadranka M. and Zannotti, Alessandro and Timotijević, Dejan and Denz, Cornelia and Jović Savić, Dragana M",
year = "2020",
abstract = "We investigate light propagation in a two-dimensional aperiodic refractive index lattice realized using the interference of multiple Mathieu–Gauss beams. We demonstrate experimentally and numerically that such a lattice effectively hinders linear light expansion and leads to light localization, compared to periodic photonic lattices in a photorefractive crystal. Most promisingly, we show that such an aperiodic lattice supports the nonlinear confinement of light in the form of soliton-like propagation that is robust with respect to changes in a wide range of intensities.",
publisher = "Appl. Phys. Lett.",
journal = "Applied Physics Letters",
title = "Light propagation in aperiodic photonic lattices created by synthesized Mathieu–Gauss beams",
volume = "117",
doi = "https://doi.org/10.1063/5.0013174"
}

Vasiljević, J. M., Zannotti, A., Timotijević, D., Denz, C.,& Jović Savić, D. M.. (2020). Light propagation in aperiodic photonic lattices created by synthesized Mathieu–Gauss beams. in Applied Physics Letters
Appl. Phys. Lett.., 117.
https://doi.org/https://doi.org/10.1063/5.0013174

Vasiljević JM, Zannotti A, Timotijević D, Denz C, Jović Savić DM. Light propagation in aperiodic photonic lattices created by synthesized Mathieu–Gauss beams. in Applied Physics Letters. 2020;117.
doi:https://doi.org/10.1063/5.0013174 .

Vasiljević, Jadranka M., Zannotti, Alessandro, Timotijević, Dejan, Denz, Cornelia, Jović Savić, Dragana M, "Light propagation in aperiodic photonic lattices created by synthesized Mathieu–Gauss beams" in Applied Physics Letters, 117 (2020),
https://doi.org/https://doi.org/10.1063/5.0013174 . .

TY  - JOUR
AU  - Zannotti, Alessandro
AU  - Vasiljević, Jadranka M.
AU  - Timotijević, Dejan
AU  - Jović Savić, Dragana M.
AU  - Denz, Cornelia
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3046
AB  - Discrete optical gratings are essential components to customize structured light waves, determined by the band structure of the periodic potential. Beyond fabricating static devices, light-driven diffraction management requires nonlinear materials. Up to now, nonlinear self-action has been limited mainly to discrete spatial solitons. Discrete solitons, however, are restricted to the eigenstates of the photonic lattice. Here, we control light formation by nonlinear discrete diffraction, allowing for versatile output diffraction states. We observe morphing of diffraction structures for discrete Mathieu beams propagating nonlinearly in photosensitive media. The self-action of a zero-order Mathieu beam in a nonlinear medium shows characteristics similar to discrete diffraction in one-dimensional waveguide arrays. Mathieu beams of higher orders show discrete diffraction along curved paths, showing the fingerprint of respective two-dimensional photonic lattices.
PB  - Optics Letters
T2  - Optics Letters
T1  - Morphing discrete diffraction in nonlinear Mathieu lattices
VL  - 44
DO  - https://doi.org/10.1364/OL.44.001592
ER  - 

@article{
author = "Zannotti, Alessandro and Vasiljević, Jadranka M. and Timotijević, Dejan and Jović Savić, Dragana M. and Denz, Cornelia",
year = "2019",
abstract = "Discrete optical gratings are essential components to customize structured light waves, determined by the band structure of the periodic potential. Beyond fabricating static devices, light-driven diffraction management requires nonlinear materials. Up to now, nonlinear self-action has been limited mainly to discrete spatial solitons. Discrete solitons, however, are restricted to the eigenstates of the photonic lattice. Here, we control light formation by nonlinear discrete diffraction, allowing for versatile output diffraction states. We observe morphing of diffraction structures for discrete Mathieu beams propagating nonlinearly in photosensitive media. The self-action of a zero-order Mathieu beam in a nonlinear medium shows characteristics similar to discrete diffraction in one-dimensional waveguide arrays. Mathieu beams of higher orders show discrete diffraction along curved paths, showing the fingerprint of respective two-dimensional photonic lattices.",
publisher = "Optics Letters",
journal = "Optics Letters",
title = "Morphing discrete diffraction in nonlinear Mathieu lattices",
volume = "44",
doi = "https://doi.org/10.1364/OL.44.001592"
}

Zannotti, A., Vasiljević, J. M., Timotijević, D., Jović Savić, D. M.,& Denz, C.. (2019). Morphing discrete diffraction in nonlinear Mathieu lattices. in Optics Letters
Optics Letters., 44.
https://doi.org/https://doi.org/10.1364/OL.44.001592

Zannotti A, Vasiljević JM, Timotijević D, Jović Savić DM, Denz C. Morphing discrete diffraction in nonlinear Mathieu lattices. in Optics Letters. 2019;44.
doi:https://doi.org/10.1364/OL.44.001592 .

Zannotti, Alessandro, Vasiljević, Jadranka M., Timotijević, Dejan, Jović Savić, Dragana M., Denz, Cornelia, "Morphing discrete diffraction in nonlinear Mathieu lattices" in Optics Letters, 44 (2019),
https://doi.org/https://doi.org/10.1364/OL.44.001592 . .

TY  - JOUR
AU  - Zannotti, A
AU  - Vasiljevic, J
AU  - Timotijević, Dejan
AU  - Jovic Savic, D
AU  - Denz, C
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3004
AB  - Exploiting the energy flow of light fields is an essential key to tailor complex optical multistate spin and orbital angular momentum (OAM) dynamics. With this work, the energy flow is identified and quantified by a novel approach that is based on the symmetry breaking induced by nonlinear light–matter interaction of OAM carrying beams at the example of Mathieu beams, showing transverse invariant intensity distributions. These complex scalar nondiffracting beams exhibit outstanding transverse energy flows on elliptic paths. Although their energy is continuously redistributed during linear propagation in homogeneous media, the beams stay nondiffracting. This approach to visualize the energy flow of light is based on the nonlinear self-action in a nonlinear crystal. By this, the sensitive equilibrium is perturbed and accumulation of rotating high-intensity spots is enabled. Intensity distributions on elliptic, chiral paths are demonstrated as a manifestation of the energy flow. Furthermore, the formation of corresponding refractive index modulations that may be implemented as chiral waveguides, is controlled via the beam power and structure size.
T2  - Advanced Optical Materials
T1  - Visualizing the Energy Flow of Tailored Light
VL  - 6
DO  - https://doi.org/10.1002/adom.201701355
ER  - 

@article{
author = "Zannotti, A and Vasiljevic, J and Timotijević, Dejan and Jovic Savic, D and Denz, C",
year = "2018",
abstract = "Exploiting the energy flow of light fields is an essential key to tailor complex optical multistate spin and orbital angular momentum (OAM) dynamics. With this work, the energy flow is identified and quantified by a novel approach that is based on the symmetry breaking induced by nonlinear light–matter interaction of OAM carrying beams at the example of Mathieu beams, showing transverse invariant intensity distributions. These complex scalar nondiffracting beams exhibit outstanding transverse energy flows on elliptic paths. Although their energy is continuously redistributed during linear propagation in homogeneous media, the beams stay nondiffracting. This approach to visualize the energy flow of light is based on the nonlinear self-action in a nonlinear crystal. By this, the sensitive equilibrium is perturbed and accumulation of rotating high-intensity spots is enabled. Intensity distributions on elliptic, chiral paths are demonstrated as a manifestation of the energy flow. Furthermore, the formation of corresponding refractive index modulations that may be implemented as chiral waveguides, is controlled via the beam power and structure size.",
journal = "Advanced Optical Materials",
title = "Visualizing the Energy Flow of Tailored Light",
volume = "6",
doi = "https://doi.org/10.1002/adom.201701355"
}

Zannotti, A., Vasiljevic, J., Timotijević, D., Jovic Savic, D.,& Denz, C.. (2018). Visualizing the Energy Flow of Tailored Light. in Advanced Optical Materials, 6.
https://doi.org/https://doi.org/10.1002/adom.201701355

Zannotti A, Vasiljevic J, Timotijević D, Jovic Savic D, Denz C. Visualizing the Energy Flow of Tailored Light. in Advanced Optical Materials. 2018;6.
doi:https://doi.org/10.1002/adom.201701355 .

Zannotti, A, Vasiljevic, J, Timotijević, Dejan, Jovic Savic, D, Denz, C, "Visualizing the Energy Flow of Tailored Light" in Advanced Optical Materials, 6 (2018),
https://doi.org/https://doi.org/10.1002/adom.201701355 . .

TY  - JOUR
AU  - Vasiljevic, Jadranka M
AU  - Zannotti, Alessandro
AU  - Timotijević, Dejan
AU  - Denz, Cornelia
AU  - Jović Savić, Dragana M.
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3019
AB  - We demonstrate unusual kinds of discrete vortex beams, elliptical necklaces, realized by Mathieu photonic lattices. Varying the order of the Mathieu lattices and their ellipticity, we can control the shape and size of such necklaces. Besides stable vortex states, we observe oscillatory dipole states or dynamical instabilities and study their orbital angular momentum. Dynamical instabilities occur for higher beam power and higher-order vortices. Also the decay of higher-order phase singularities and their separation is observed in dependence on the ellipticity.
PB  - Physical Review A
T2  - Phys. Rev. A
T1  - Elliptical vortex necklaces in Mathieu lattices
VL  - 97
DO  - https://doi.org/10.1103/PhysRevA.97.033848
ER  - 

@article{
author = "Vasiljevic, Jadranka M and Zannotti, Alessandro and Timotijević, Dejan and Denz, Cornelia and Jović Savić, Dragana M.",
year = "2018",
abstract = "We demonstrate unusual kinds of discrete vortex beams, elliptical necklaces, realized by Mathieu photonic lattices. Varying the order of the Mathieu lattices and their ellipticity, we can control the shape and size of such necklaces. Besides stable vortex states, we observe oscillatory dipole states or dynamical instabilities and study their orbital angular momentum. Dynamical instabilities occur for higher beam power and higher-order vortices. Also the decay of higher-order phase singularities and their separation is observed in dependence on the ellipticity.",
publisher = "Physical Review A",
journal = "Phys. Rev. A",
title = "Elliptical vortex necklaces in Mathieu lattices",
volume = "97",
doi = "https://doi.org/10.1103/PhysRevA.97.033848"
}

Vasiljevic, J. M., Zannotti, A., Timotijević, D., Denz, C.,& Jović Savić, D. M.. (2018). Elliptical vortex necklaces in Mathieu lattices. in Phys. Rev. A
Physical Review A., 97.
https://doi.org/https://doi.org/10.1103/PhysRevA.97.033848

Vasiljevic JM, Zannotti A, Timotijević D, Denz C, Jović Savić DM. Elliptical vortex necklaces in Mathieu lattices. in Phys. Rev. A. 2018;97.
doi:https://doi.org/10.1103/PhysRevA.97.033848 .

Vasiljevic, Jadranka M, Zannotti, Alessandro, Timotijević, Dejan, Denz, Cornelia, Jović Savić, Dragana M., "Elliptical vortex necklaces in Mathieu lattices" in Phys. Rev. A, 97 (2018),
https://doi.org/https://doi.org/10.1103/PhysRevA.97.033848 . .

TY  - JOUR
AU  - Vasiljević, Jadranka M.
AU  - Zannotti, Alessandro
AU  - Timotijević, Dejan
AU  - Denz, Cornelia
AU  - Jović Savić, Dragana M.
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3017
AB  - We demonstrate a kind of aperiodic photonic structure realized using the interference of multiple Mathieu-Gauss beams. Depending on the beam configurations, their mutual distances, angles of rotation, or phase relations we are able to observe different classes of such aperiodic optically induced refractive index structures. Our experimental approach is based on the optical induction in a single parallel writing process.
PB  - Physical Review A
T2  - PHYSICAL REVIEW A
T1  - Creating aperiodic photonic structures by synthesized Mathieu-Gauss beams
VL  - 96
DO  - https://doi.org/10.1103/PhysRevA.96.023840
ER  - 

@article{
author = "Vasiljević, Jadranka M. and Zannotti, Alessandro and Timotijević, Dejan and Denz, Cornelia and Jović Savić, Dragana M.",
year = "2017",
abstract = "We demonstrate a kind of aperiodic photonic structure realized using the interference of multiple Mathieu-Gauss beams. Depending on the beam configurations, their mutual distances, angles of rotation, or phase relations we are able to observe different classes of such aperiodic optically induced refractive index structures. Our experimental approach is based on the optical induction in a single parallel writing process.",
publisher = "Physical Review A",
journal = "PHYSICAL REVIEW A",
title = "Creating aperiodic photonic structures by synthesized Mathieu-Gauss beams",
volume = "96",
doi = "https://doi.org/10.1103/PhysRevA.96.023840"
}

Vasiljević, J. M., Zannotti, A., Timotijević, D., Denz, C.,& Jović Savić, D. M.. (2017). Creating aperiodic photonic structures by synthesized Mathieu-Gauss beams. in PHYSICAL REVIEW A
Physical Review A., 96.
https://doi.org/https://doi.org/10.1103/PhysRevA.96.023840

Vasiljević JM, Zannotti A, Timotijević D, Denz C, Jović Savić DM. Creating aperiodic photonic structures by synthesized Mathieu-Gauss beams. in PHYSICAL REVIEW A. 2017;96.
doi:https://doi.org/10.1103/PhysRevA.96.023840 .

Vasiljević, Jadranka M., Zannotti, Alessandro, Timotijević, Dejan, Denz, Cornelia, Jović Savić, Dragana M., "Creating aperiodic photonic structures by synthesized Mathieu-Gauss beams" in PHYSICAL REVIEW A, 96 (2017),
https://doi.org/https://doi.org/10.1103/PhysRevA.96.023840 . .

TY  - JOUR
AU  - Boguslawski, M
AU  - Lucic, N
AU  - Diebel, F
AU  - Timotijević, Dejan
AU  - Denz, C
AU  - Jovic Savic, D
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2824
AB  - As light localization becomes increasingly pronounced in photonic systems with less order, we investigate optically induced two-dimensional Fibonacci structures that are supposed to be among the most ordered realizations of deterministic aperiodic patterns. For the generation of corresponding refractive index structures, we implement a recently developed incremental induction method using nondiffracting Bessel beams as waveguide formation entities. Even though Fibonacci structures present slightly reduced order, we show that transverse light transport here is significantly hampered in comparison with discrete diffraction in a periodic lattice. Numerical simulations that support our experimental findings help to identify three cases of input waveguide configurations that significantly determine the initial propagation in a Fibonacci structure. These crucial starting conditions determine the character of light transport, yielding either localization or enhanced expansion. A diverse set of light transport scenarios is identified therein.
T2  - Optica
T1  - Light localization in optically induced deterministic aperiodic Fibonacci lattices
VL  - 3
DO  - https://doi.org/10.1364/optica.3.000711
ER  - 

@article{
author = "Boguslawski, M and Lucic, N and Diebel, F and Timotijević, Dejan and Denz, C and Jovic Savic, D",
year = "2016",
abstract = "As light localization becomes increasingly pronounced in photonic systems with less order, we investigate optically induced two-dimensional Fibonacci structures that are supposed to be among the most ordered realizations of deterministic aperiodic patterns. For the generation of corresponding refractive index structures, we implement a recently developed incremental induction method using nondiffracting Bessel beams as waveguide formation entities. Even though Fibonacci structures present slightly reduced order, we show that transverse light transport here is significantly hampered in comparison with discrete diffraction in a periodic lattice. Numerical simulations that support our experimental findings help to identify three cases of input waveguide configurations that significantly determine the initial propagation in a Fibonacci structure. These crucial starting conditions determine the character of light transport, yielding either localization or enhanced expansion. A diverse set of light transport scenarios is identified therein.",
journal = "Optica",
title = "Light localization in optically induced deterministic aperiodic Fibonacci lattices",
volume = "3",
doi = "https://doi.org/10.1364/optica.3.000711"
}

Boguslawski, M., Lucic, N., Diebel, F., Timotijević, D., Denz, C.,& Jovic Savic, D.. (2016). Light localization in optically induced deterministic aperiodic Fibonacci lattices. in Optica, 3.
https://doi.org/https://doi.org/10.1364/optica.3.000711

Boguslawski M, Lucic N, Diebel F, Timotijević D, Denz C, Jovic Savic D. Light localization in optically induced deterministic aperiodic Fibonacci lattices. in Optica. 2016;3.
doi:https://doi.org/10.1364/optica.3.000711 .

Boguslawski, M, Lucic, N, Diebel, F, Timotijević, Dejan, Denz, C, Jovic Savic, D, "Light localization in optically induced deterministic aperiodic Fibonacci lattices" in Optica, 3 (2016),
https://doi.org/https://doi.org/10.1364/optica.3.000711 . .

TY  - JOUR
AU  - Lucic, N
AU  - Jovic Savic, D
AU  - Piper, A
AU  - Grujic, D
AU  - Vasiljevic, J
AU  - Pantelic, D
AU  - Jelenkovic, B
AU  - Timotijević, Dejan
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2999
AB  - We investigate light propagation along one-dimensional quasi-periodic Fibonacci waveguide array optically induced in Fe:LiNbO3 crystal. Two Fibonacci elements, A and B, are used as a separation between waveguides. We demonstrate numerically and experimentally that a beam expansion in such arrays is effectively reduced compared to the periodic ones, without changing beam expansion scaling law. The influence of refractive index variation on the beam expansion in such systems is discussed: more pronounced diffraction suppression is observed for a higher refractive index variation.
T2  - Journal of the Optical Society of America B
T1  - Light propagation in quasi-periodic Fibonacci waveguide arrays
VL  - 32
DO  - https://doi.org/10.1364/josab.32.001510
ER  - 

@article{
author = "Lucic, N and Jovic Savic, D and Piper, A and Grujic, D and Vasiljevic, J and Pantelic, D and Jelenkovic, B and Timotijević, Dejan",
year = "2015",
abstract = "We investigate light propagation along one-dimensional quasi-periodic Fibonacci waveguide array optically induced in Fe:LiNbO3 crystal. Two Fibonacci elements, A and B, are used as a separation between waveguides. We demonstrate numerically and experimentally that a beam expansion in such arrays is effectively reduced compared to the periodic ones, without changing beam expansion scaling law. The influence of refractive index variation on the beam expansion in such systems is discussed: more pronounced diffraction suppression is observed for a higher refractive index variation.",
journal = "Journal of the Optical Society of America B",
title = "Light propagation in quasi-periodic Fibonacci waveguide arrays",
volume = "32",
doi = "https://doi.org/10.1364/josab.32.001510"
}

Lucic, N., Jovic Savic, D., Piper, A., Grujic, D., Vasiljevic, J., Pantelic, D., Jelenkovic, B.,& Timotijević, D.. (2015). Light propagation in quasi-periodic Fibonacci waveguide arrays. in Journal of the Optical Society of America B, 32.
https://doi.org/https://doi.org/10.1364/josab.32.001510

Lucic N, Jovic Savic D, Piper A, Grujic D, Vasiljevic J, Pantelic D, Jelenkovic B, Timotijević D. Light propagation in quasi-periodic Fibonacci waveguide arrays. in Journal of the Optical Society of America B. 2015;32.
doi:https://doi.org/10.1364/josab.32.001510 .

Lucic, N, Jovic Savic, D, Piper, A, Grujic, D, Vasiljevic, J, Pantelic, D, Jelenkovic, B, Timotijević, Dejan, "Light propagation in quasi-periodic Fibonacci waveguide arrays" in Journal of the Optical Society of America B, 32 (2015),
https://doi.org/https://doi.org/10.1364/josab.32.001510 . .

TY  - JOUR
AU  - Jovic Savic, D
AU  - Piper, A
AU  - Zikic, R
AU  - Timotijević, Dejan
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3011
AB  - Vortex solitons at the interface separating two different photonic lattices – square and hexagonal – are demonstrated numerically. We consider the conditions for the existence of discrete vortex states at such interfaces and develop a concise picture of different scenarios of the vortex solutions behavior. Various vortices with different size and topological charges are considered, as well as various lattice interfaces. A novel type of discrete vortex surface solitons in a form of five-lobe solution is observed. Besides stable three-lobe and six-lobe discrete surface modes propagating for long distances, we observe various oscillatory vortex surface solitons, as well as dynamical instabilities of different kinds of solutions and study their angular momentum. Dynamical instabilities occur for higher values of the propagation constant, or at higher beam powers.
T2  - Physics Letters A
T1  - Vortex solitons at the interface separating square and hexagonal lattices
VL  - 379
DO  - https://doi.org/10.1016/j.physleta.2015.02.014
ER  - 

@article{
author = "Jovic Savic, D and Piper, A and Zikic, R and Timotijević, Dejan",
year = "2015",
abstract = "Vortex solitons at the interface separating two different photonic lattices – square and hexagonal – are demonstrated numerically. We consider the conditions for the existence of discrete vortex states at such interfaces and develop a concise picture of different scenarios of the vortex solutions behavior. Various vortices with different size and topological charges are considered, as well as various lattice interfaces. A novel type of discrete vortex surface solitons in a form of five-lobe solution is observed. Besides stable three-lobe and six-lobe discrete surface modes propagating for long distances, we observe various oscillatory vortex surface solitons, as well as dynamical instabilities of different kinds of solutions and study their angular momentum. Dynamical instabilities occur for higher values of the propagation constant, or at higher beam powers.",
journal = "Physics Letters A",
title = "Vortex solitons at the interface separating square and hexagonal lattices",
volume = "379",
doi = "https://doi.org/10.1016/j.physleta.2015.02.014"
}

Jovic Savic, D., Piper, A., Zikic, R.,& Timotijević, D.. (2015). Vortex solitons at the interface separating square and hexagonal lattices. in Physics Letters A, 379.
https://doi.org/https://doi.org/10.1016/j.physleta.2015.02.014

Jovic Savic D, Piper A, Zikic R, Timotijević D. Vortex solitons at the interface separating square and hexagonal lattices. in Physics Letters A. 2015;379.
doi:https://doi.org/10.1016/j.physleta.2015.02.014 .

Jovic Savic, D, Piper, A, Zikic, R, Timotijević, Dejan, "Vortex solitons at the interface separating square and hexagonal lattices" in Physics Letters A, 379 (2015),
https://doi.org/https://doi.org/10.1016/j.physleta.2015.02.014 . .

TY  - JOUR
AU  - Diebel, F
AU  - Bokic, B
AU  - Timotijević, Dejan
AU  - Jovic Savic, D
AU  - Denz, C
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2998
AB  - We demonstrate a new type of soliton formation arising from the interaction of multiple two-dimensional Airy beams in a nonlinear medium. While in linear regime, interference effects of two or four spatially displaced Airy beams lead to accelerated intensity structures that can be used for optical induction of novel light guiding refractive index structures, the nonlinear cross-interaction between the Airy beams decelerates their bending and enables the formation of straight propagating solitary states. Our experimental results represent an intriguing combination of two fundamental effects, accelerated optical beams and nonlinearity, together enable novel mechanisms of soliton formation that will find applications in all-optical light localization and switching architectures. Our experimental results are supported by corresponding numerical simulations.
T2  - Optics Express
T1  - Soliton formation by decelerating interacting Airy beams
VL  - 23
DO  - https://doi.org/10.1364/oe.23.024351
ER  - 

@article{
author = "Diebel, F and Bokic, B and Timotijević, Dejan and Jovic Savic, D and Denz, C",
year = "2015",
abstract = "We demonstrate a new type of soliton formation arising from the interaction of multiple two-dimensional Airy beams in a nonlinear medium. While in linear regime, interference effects of two or four spatially displaced Airy beams lead to accelerated intensity structures that can be used for optical induction of novel light guiding refractive index structures, the nonlinear cross-interaction between the Airy beams decelerates their bending and enables the formation of straight propagating solitary states. Our experimental results represent an intriguing combination of two fundamental effects, accelerated optical beams and nonlinearity, together enable novel mechanisms of soliton formation that will find applications in all-optical light localization and switching architectures. Our experimental results are supported by corresponding numerical simulations.",
journal = "Optics Express",
title = "Soliton formation by decelerating interacting Airy beams",
volume = "23",
doi = "https://doi.org/10.1364/oe.23.024351"
}

Diebel, F., Bokic, B., Timotijević, D., Jovic Savic, D.,& Denz, C.. (2015). Soliton formation by decelerating interacting Airy beams. in Optics Express, 23.
https://doi.org/https://doi.org/10.1364/oe.23.024351

Diebel F, Bokic B, Timotijević D, Jovic Savic D, Denz C. Soliton formation by decelerating interacting Airy beams. in Optics Express. 2015;23.
doi:https://doi.org/10.1364/oe.23.024351 .

Diebel, F, Bokic, B, Timotijević, Dejan, Jovic Savic, D, Denz, C, "Soliton formation by decelerating interacting Airy beams" in Optics Express, 23 (2015),
https://doi.org/https://doi.org/10.1364/oe.23.024351 . .

TY  - JOUR
AU  - Diebel, F
AU  - Bokic, B
AU  - Boguslawski, M
AU  - Piper, A
AU  - Timotijević, Dejan
AU  - Jovic Savic, D
AU  - Denz, C
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3003
AB  - We demonstrate control over the acceleration of two-dimensional Airy beams propagating in optically induced photonic lattices. Depending on the lattice strength, we observe a slowing-down and suppression of the self-acceleration of Airy beams, as well as a formation of discrete lattice beams. Moreover, we explore the effects of different artificial single-side defects on the propagation and acceleration. For positive defects, the localization of the Airy beam to the defect site is further enhanced, while for negative defects most of the power is repelled from this site.
T2  - Physical Review A
T1  - Control of Airy-beam self-acceleration by photonic lattices
VL  - 90
DO  - https://doi.org/10.1103/physreva.90.033802
ER  - 

@article{
author = "Diebel, F and Bokic, B and Boguslawski, M and Piper, A and Timotijević, Dejan and Jovic Savic, D and Denz, C",
year = "2014",
abstract = "We demonstrate control over the acceleration of two-dimensional Airy beams propagating in optically induced photonic lattices. Depending on the lattice strength, we observe a slowing-down and suppression of the self-acceleration of Airy beams, as well as a formation of discrete lattice beams. Moreover, we explore the effects of different artificial single-side defects on the propagation and acceleration. For positive defects, the localization of the Airy beam to the defect site is further enhanced, while for negative defects most of the power is repelled from this site.",
journal = "Physical Review A",
title = "Control of Airy-beam self-acceleration by photonic lattices",
volume = "90",
doi = "https://doi.org/10.1103/physreva.90.033802"
}

Diebel, F., Bokic, B., Boguslawski, M., Piper, A., Timotijević, D., Jovic Savic, D.,& Denz, C.. (2014). Control of Airy-beam self-acceleration by photonic lattices. in Physical Review A, 90.
https://doi.org/https://doi.org/10.1103/physreva.90.033802

Diebel F, Bokic B, Boguslawski M, Piper A, Timotijević D, Jovic Savic D, Denz C. Control of Airy-beam self-acceleration by photonic lattices. in Physical Review A. 2014;90.
doi:https://doi.org/10.1103/physreva.90.033802 .

Diebel, F, Bokic, B, Boguslawski, M, Piper, A, Timotijević, Dejan, Jovic Savic, D, Denz, C, "Control of Airy-beam self-acceleration by photonic lattices" in Physical Review A, 90 (2014),
https://doi.org/https://doi.org/10.1103/physreva.90.033802 . .

TY  - JOUR
AU  - Gilic, M
AU  - Trajic, J
AU  - Romcevic, N
AU  - Romcevic, M
AU  - Timotijević, Dejan
AU  - Stanisic, G
AU  - Yahia, I.S
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3023
AB  - The properties of CdS thin films were investigated by applying atomic force microscopy (AFM), Raman and far-infrared spectroscopy. CdS thin films were prepared by using the thermal evaporation technique under base pressure 2 × 10−5 torr. The quality of these films was investigated by AFM spectroscopy. We applied Raman scattering and far-infrared spectroscopy to investigate the optical properties of CdS thin films, and reveal the existence of Surface Optical Phonon (SOP) mode at 297 cm−1. Effective permittivity of mixture was modeled by Maxwell–Garnet approximation. In the analysis of the far-infrared reflection spectra, a numerical model for calculating the reflectivity coefficient for a system which includes films and substrate was applied.
PB  - Elsevier
T2  - Optical Materials
T1  - Optical properties of CdS thin films
VL  - 35
DO  - https://doi.org/10.1016/j.optmat.2012.12.028
ER  - 

@article{
author = "Gilic, M and Trajic, J and Romcevic, N and Romcevic, M and Timotijević, Dejan and Stanisic, G and Yahia, I.S",
year = "2013",
abstract = "The properties of CdS thin films were investigated by applying atomic force microscopy (AFM), Raman and far-infrared spectroscopy. CdS thin films were prepared by using the thermal evaporation technique under base pressure 2 × 10−5 torr. The quality of these films was investigated by AFM spectroscopy. We applied Raman scattering and far-infrared spectroscopy to investigate the optical properties of CdS thin films, and reveal the existence of Surface Optical Phonon (SOP) mode at 297 cm−1. Effective permittivity of mixture was modeled by Maxwell–Garnet approximation. In the analysis of the far-infrared reflection spectra, a numerical model for calculating the reflectivity coefficient for a system which includes films and substrate was applied.",
publisher = "Elsevier",
journal = "Optical Materials",
title = "Optical properties of CdS thin films",
volume = "35",
doi = "https://doi.org/10.1016/j.optmat.2012.12.028"
}

Gilic, M., Trajic, J., Romcevic, N., Romcevic, M., Timotijević, D., Stanisic, G.,& Yahia, I.S. (2013). Optical properties of CdS thin films. in Optical Materials
Elsevier., 35.
https://doi.org/https://doi.org/10.1016/j.optmat.2012.12.028

Gilic M, Trajic J, Romcevic N, Romcevic M, Timotijević D, Stanisic G, Yahia I. Optical properties of CdS thin films. in Optical Materials. 2013;35.
doi:https://doi.org/10.1016/j.optmat.2012.12.028 .

Gilic, M, Trajic, J, Romcevic, N, Romcevic, M, Timotijević, Dejan, Stanisic, G, Yahia, I.S, "Optical properties of CdS thin films" in Optical Materials, 35 (2013),
https://doi.org/https://doi.org/10.1016/j.optmat.2012.12.028 . .

TY  - JOUR
AU  - Piper, A
AU  - Timotijević, Dejan
AU  - Jovic Savic, D
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3002
AB  - We analyze how an optically induced photonic lattice affects and modifies the acceleration of Airy beams. Various conditions for the propagation and existence of Airy beams are considered in both linear and nonlinear regimes. We investigate how the strength of a medium's nonlinearity and the lattice intensity influence beam diffraction as well as reduction of beam acceleration. It is shown that the transverse acceleration of Airy beams, when propagating in a photonic lattice, can be reduced to the point of creating a beam similar to discrete solitons. Acceleration control of Airy beams near lattice boundaries is also investigated. We observe a novel type of Airy surface mode, localized in the lattice corner.
T2  - PHYSICA SCRIPTA
T1  - Acceleration control of Airy beams with optically induced photonic lattices
VL  - T157
DO  - https://doi.org/10.1088/0031-8949/2013/t157/014023
ER  - 

@article{
author = "Piper, A and Timotijević, Dejan and Jovic Savic, D",
year = "2013",
abstract = "We analyze how an optically induced photonic lattice affects and modifies the acceleration of Airy beams. Various conditions for the propagation and existence of Airy beams are considered in both linear and nonlinear regimes. We investigate how the strength of a medium's nonlinearity and the lattice intensity influence beam diffraction as well as reduction of beam acceleration. It is shown that the transverse acceleration of Airy beams, when propagating in a photonic lattice, can be reduced to the point of creating a beam similar to discrete solitons. Acceleration control of Airy beams near lattice boundaries is also investigated. We observe a novel type of Airy surface mode, localized in the lattice corner.",
journal = "PHYSICA SCRIPTA",
title = "Acceleration control of Airy beams with optically induced photonic lattices",
volume = "T157",
doi = "https://doi.org/10.1088/0031-8949/2013/t157/014023"
}

Piper, A., Timotijević, D.,& Jovic Savic, D.. (2013). Acceleration control of Airy beams with optically induced photonic lattices. in PHYSICA SCRIPTA, T157.
https://doi.org/https://doi.org/10.1088/0031-8949/2013/t157/014023

Piper A, Timotijević D, Jovic Savic D. Acceleration control of Airy beams with optically induced photonic lattices. in PHYSICA SCRIPTA. 2013;T157.
doi:https://doi.org/10.1088/0031-8949/2013/t157/014023 .

Piper, A, Timotijević, Dejan, Jovic Savic, D, "Acceleration control of Airy beams with optically induced photonic lattices" in PHYSICA SCRIPTA, T157 (2013),
https://doi.org/https://doi.org/10.1088/0031-8949/2013/t157/014023 . .

TY  - JOUR
AU  - Lucic, N
AU  - Bokic, B
AU  - Grujic, D
AU  - Pantelić, D. V
AU  - Jelenković, B. M
AU  - Piper, A
AU  - Jović, D. M
AU  - Timotijević, Dejan
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3016
AB  - We demonstrate both theoretically and experimentally that a finite Airy beam changes its trajectory and shape in optically induced waveguide arrays consisting of different kinds of defects. The propagation dynamics and beam acceleration are controlled with positive and negative defects, and appropriate refractive index change. An additional class of discrete beams and Airy defect modes are demonstrated.
T2  - Physical Review A
T1  - Defect-guided Airy beams in optically induced waveguide arrays
VL  - 88
DO  - https://doi.org/10.1103/physreva.88.063815
ER  - 

@article{
author = "Lucic, N and Bokic, B and Grujic, D and Pantelić, D. V and Jelenković, B. M and Piper, A and Jović, D. M and Timotijević, Dejan",
year = "2013",
abstract = "We demonstrate both theoretically and experimentally that a finite Airy beam changes its trajectory and shape in optically induced waveguide arrays consisting of different kinds of defects. The propagation dynamics and beam acceleration are controlled with positive and negative defects, and appropriate refractive index change. An additional class of discrete beams and Airy defect modes are demonstrated.",
journal = "Physical Review A",
title = "Defect-guided Airy beams in optically induced waveguide arrays",
volume = "88",
doi = "https://doi.org/10.1103/physreva.88.063815"
}

Lucic, N., Bokic, B., Grujic, D., Pantelić, D. V., Jelenković, B. M., Piper, A., Jović, D. M.,& Timotijević, D.. (2013). Defect-guided Airy beams in optically induced waveguide arrays. in Physical Review A, 88.
https://doi.org/https://doi.org/10.1103/physreva.88.063815

Lucic N, Bokic B, Grujic D, Pantelić DV, Jelenković BM, Piper A, Jović DM, Timotijević D. Defect-guided Airy beams in optically induced waveguide arrays. in Physical Review A. 2013;88.
doi:https://doi.org/10.1103/physreva.88.063815 .

Lucic, N, Bokic, B, Grujic, D, Pantelić, D. V, Jelenković, B. M, Piper, A, Jović, D. M, Timotijević, Dejan, "Defect-guided Airy beams in optically induced waveguide arrays" in Physical Review A, 88 (2013),
https://doi.org/https://doi.org/10.1103/physreva.88.063815 . .

TY  - JOUR
AU  - Romcevic, M
AU  - Romcevic, N
AU  - Dobrowolski, W
AU  - Kilanski, L
AU  - Trajić, J
AU  - Timotijević, Dejan
AU  - Dynowska, E
AU  - Fedorchenko, I. V
AU  - Marenkin, S. F
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3021
AB  - Optical properties of p-type Zn1−xMnxGeAs2 for 0 ⩽ x ⩽ 0.078 were investigated by Raman spectroscopy at room temperature. Phonons of ZnGeAs2 are experimentally determined and they are in excellent agreement with those theoretically predicted. Existence of MnAs clusters was confirmed in the sample with the highest concentration of Mn. MnAs was found in α and β phases and their vibrational frequencies are obtained experimentally. Plasmon – two different phonons interaction in Zn1−xMnxGeAs2 is registered and analyzed.
T2  - Journal of Alloys and Compounds
T1  - Optical properties and plasmon – Two different phonons coupling in ZnGeAs2 + Mn
VL  - 548
DO  - https://doi.org/10.1016/j.jallcom.2012.09.017
ER  - 

@article{
author = "Romcevic, M and Romcevic, N and Dobrowolski, W and Kilanski, L and Trajić, J and Timotijević, Dejan and Dynowska, E and Fedorchenko, I. V and Marenkin, S. F",
year = "2013",
abstract = "Optical properties of p-type Zn1−xMnxGeAs2 for 0 ⩽ x ⩽ 0.078 were investigated by Raman spectroscopy at room temperature. Phonons of ZnGeAs2 are experimentally determined and they are in excellent agreement with those theoretically predicted. Existence of MnAs clusters was confirmed in the sample with the highest concentration of Mn. MnAs was found in α and β phases and their vibrational frequencies are obtained experimentally. Plasmon – two different phonons interaction in Zn1−xMnxGeAs2 is registered and analyzed.",
journal = "Journal of Alloys and Compounds",
title = "Optical properties and plasmon – Two different phonons coupling in ZnGeAs2 + Mn",
volume = "548",
doi = "https://doi.org/10.1016/j.jallcom.2012.09.017"
}

Romcevic, M., Romcevic, N., Dobrowolski, W., Kilanski, L., Trajić, J., Timotijević, D., Dynowska, E., Fedorchenko, I. V.,& Marenkin, S. F.. (2013). Optical properties and plasmon – Two different phonons coupling in ZnGeAs2 + Mn. in Journal of Alloys and Compounds, 548.
https://doi.org/https://doi.org/10.1016/j.jallcom.2012.09.017

Romcevic M, Romcevic N, Dobrowolski W, Kilanski L, Trajić J, Timotijević D, Dynowska E, Fedorchenko IV, Marenkin SF. Optical properties and plasmon – Two different phonons coupling in ZnGeAs2 + Mn. in Journal of Alloys and Compounds. 2013;548.
doi:https://doi.org/10.1016/j.jallcom.2012.09.017 .

Romcevic, M, Romcevic, N, Dobrowolski, W, Kilanski, L, Trajić, J, Timotijević, Dejan, Dynowska, E, Fedorchenko, I. V, Marenkin, S. F, "Optical properties and plasmon – Two different phonons coupling in ZnGeAs2 + Mn" in Journal of Alloys and Compounds, 548 (2013),
https://doi.org/https://doi.org/10.1016/j.jallcom.2012.09.017 . .

TY  - JOUR
AU  - Vukovic, S.M
AU  - Aleksic, N
AU  - Timotijević, Dejan
AU  - Belic, M.R
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2996
AB  - We studied electromagnetic wave transmission through layered structures that include negative index materials. The excitation of leaky guided modes leads to the formation of anomalous lateral shifts in the reflected beam with a double-peak structure and in the transmitted beam with a single-peak structure. In the absence of losses, we demonstrate that the total transparency (i.e. zero reflection) of the slab waveguide with the negative index material can be achieved under conditions in which high reflectivity is normally expected. We demonstrate the trade-off effect between the high transmission and the high lateral shift. This peculiar effect exists not only for the pure TE or the pure TM polarization of the obliquely incident radiation, but also under certain circumstances for both of them simultaneously i.e. for the nonpolarized radiation.
T2  - Optics Communications
T1  - Lateral beam shift at transmission through layered structures with negative index material
VL  - 285
DO  - https://doi.org/10.1016/j.optcom.2011.11.083
ER  - 

@article{
author = "Vukovic, S.M and Aleksic, N and Timotijević, Dejan and Belic, M.R",
year = "2012",
abstract = "We studied electromagnetic wave transmission through layered structures that include negative index materials. The excitation of leaky guided modes leads to the formation of anomalous lateral shifts in the reflected beam with a double-peak structure and in the transmitted beam with a single-peak structure. In the absence of losses, we demonstrate that the total transparency (i.e. zero reflection) of the slab waveguide with the negative index material can be achieved under conditions in which high reflectivity is normally expected. We demonstrate the trade-off effect between the high transmission and the high lateral shift. This peculiar effect exists not only for the pure TE or the pure TM polarization of the obliquely incident radiation, but also under certain circumstances for both of them simultaneously i.e. for the nonpolarized radiation.",
journal = "Optics Communications",
title = "Lateral beam shift at transmission through layered structures with negative index material",
volume = "285",
doi = "https://doi.org/10.1016/j.optcom.2011.11.083"
}

Vukovic, S.M, Aleksic, N., Timotijević, D.,& Belic, M.R. (2012). Lateral beam shift at transmission through layered structures with negative index material. in Optics Communications, 285.
https://doi.org/https://doi.org/10.1016/j.optcom.2011.11.083

Vukovic S, Aleksic N, Timotijević D, Belic M. Lateral beam shift at transmission through layered structures with negative index material. in Optics Communications. 2012;285.
doi:https://doi.org/10.1016/j.optcom.2011.11.083 .

Vukovic, S.M, Aleksic, N, Timotijević, Dejan, Belic, M.R, "Lateral beam shift at transmission through layered structures with negative index material" in Optics Communications, 285 (2012),
https://doi.org/https://doi.org/10.1016/j.optcom.2011.11.083 . .

TY  - JOUR
AU  - Hadzic, B
AU  - Romcevic, N
AU  - Romcevic, M.I
AU  - Kuryliszyn-Kudelska, I
AU  - Dobrowolski, W
AU  - Trajić, J
AU  - Timotijević, Dejan
AU  - Narkiewicz, U
AU  - Sibera, D
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3015
AB  - Surface optical phonons (SOP) were observed in the range of 496–572 cm−1 on Raman scattering spectra of nanocrystalline samples of ZnO(Co) prepared by use of the microwave assisted hydrothermal synthesis and traditional wet chemistry method followed by calcinations. The phase composition of the samples (ZnO, Co3O4, ZnCo2O4) and the mean crystalline size (14–300 nm) were determined using X-ray diffraction measurements. The SOP phonon mode exhibit significant size confinement effect, while the phonons of registered phases exhibit effects connected to phase concentration.
T2  - Journal of Alloys and Compounds
T1  - Surface optical phonons in ZnO(Co) nanoparticles: Raman study
VL  - 540
DO  - https://doi.org/10.1016/j.jallcom.2012.06.076
ER  - 

@article{
author = "Hadzic, B and Romcevic, N and Romcevic, M.I and Kuryliszyn-Kudelska, I and Dobrowolski, W and Trajić, J and Timotijević, Dejan and Narkiewicz, U and Sibera, D",
year = "2012",
abstract = "Surface optical phonons (SOP) were observed in the range of 496–572 cm−1 on Raman scattering spectra of nanocrystalline samples of ZnO(Co) prepared by use of the microwave assisted hydrothermal synthesis and traditional wet chemistry method followed by calcinations. The phase composition of the samples (ZnO, Co3O4, ZnCo2O4) and the mean crystalline size (14–300 nm) were determined using X-ray diffraction measurements. The SOP phonon mode exhibit significant size confinement effect, while the phonons of registered phases exhibit effects connected to phase concentration.",
journal = "Journal of Alloys and Compounds",
title = "Surface optical phonons in ZnO(Co) nanoparticles: Raman study",
volume = "540",
doi = "https://doi.org/10.1016/j.jallcom.2012.06.076"
}

Hadzic, B., Romcevic, N., Romcevic, M.I, Kuryliszyn-Kudelska, I., Dobrowolski, W., Trajić, J., Timotijević, D., Narkiewicz, U.,& Sibera, D.. (2012). Surface optical phonons in ZnO(Co) nanoparticles: Raman study. in Journal of Alloys and Compounds, 540.
https://doi.org/https://doi.org/10.1016/j.jallcom.2012.06.076

Hadzic B, Romcevic N, Romcevic M, Kuryliszyn-Kudelska I, Dobrowolski W, Trajić J, Timotijević D, Narkiewicz U, Sibera D. Surface optical phonons in ZnO(Co) nanoparticles: Raman study. in Journal of Alloys and Compounds. 2012;540.
doi:https://doi.org/10.1016/j.jallcom.2012.06.076 .

Hadzic, B, Romcevic, N, Romcevic, M.I, Kuryliszyn-Kudelska, I, Dobrowolski, W, Trajić, J, Timotijević, Dejan, Narkiewicz, U, Sibera, D, "Surface optical phonons in ZnO(Co) nanoparticles: Raman study" in Journal of Alloys and Compounds, 540 (2012),
https://doi.org/https://doi.org/10.1016/j.jallcom.2012.06.076 . .

TY  - JOUR
AU  - Jovic, D. M
AU  - Timotijević, Dejan
AU  - Piper, A
AU  - Aleksic, N.B
AU  - Kivshar, Y.S
AU  - Belic, M.R
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2842
AB  - We study numerically the interaction of two counterpropagating (CP) optical beams near the boundary of a truncated one-dimensional photonic lattice. We demonstrate that the mutual coupling of beams suppresses the effective repulsion from the lattice edge, resulting in the formation of CP surface solitons. Such localized beams may propagate in the same, as well as in neighboring, waveguides. We also reveal that the lattice disorder reduces substantially the threshold power for the formation of CP surface states.
T2  - Optics Letters
T1  - Counterpropagating solitons at boundary of photonic lattices
VL  - 35
DO  - https://doi.org/10.1364/OL.35.002355
ER  - 

@article{
author = "Jovic, D. M and Timotijević, Dejan and Piper, A and Aleksic, N.B and Kivshar, Y.S and Belic, M.R",
year = "2010",
abstract = "We study numerically the interaction of two counterpropagating (CP) optical beams near the boundary of a truncated one-dimensional photonic lattice. We demonstrate that the mutual coupling of beams suppresses the effective repulsion from the lattice edge, resulting in the formation of CP surface solitons. Such localized beams may propagate in the same, as well as in neighboring, waveguides. We also reveal that the lattice disorder reduces substantially the threshold power for the formation of CP surface states.",
journal = "Optics Letters",
title = "Counterpropagating solitons at boundary of photonic lattices",
volume = "35",
doi = "https://doi.org/10.1364/OL.35.002355"
}

Jovic, D. M., Timotijević, D., Piper, A., Aleksic, N.B, Kivshar, Y.S,& Belic, M.R. (2010). Counterpropagating solitons at boundary of photonic lattices. in Optics Letters, 35.
https://doi.org/https://doi.org/10.1364/OL.35.002355

Jovic DM, Timotijević D, Piper A, Aleksic N, Kivshar Y, Belic M. Counterpropagating solitons at boundary of photonic lattices. in Optics Letters. 2010;35.
doi:https://doi.org/10.1364/OL.35.002355 .

Jovic, D. M, Timotijević, Dejan, Piper, A, Aleksic, N.B, Kivshar, Y.S, Belic, M.R, "Counterpropagating solitons at boundary of photonic lattices" in Optics Letters, 35 (2010),
https://doi.org/https://doi.org/10.1364/OL.35.002355 . .

TY  - JOUR
AU  - Strinić, A
AU  - Petrović, M
AU  - Timotijević, Dejan
AU  - Aleksic, N.B
AU  - Belic, M.R
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3006
AB  - Dynamical and steady-state behavior of beams propagating in nematic liquid crystals (NLCs) is analyzed. A well-known model for the beam propagation and the director reorientation angle in a NLC cell is treated numerically in space and time. The formation of steady-state soliton breathers in a threshold region of beam intensities is displayed. Below the region the beams diffract, above the region spatiotemporal instabilities develop, as the input intensity and the material parameters are varied. Curiously, the only kind of solitons we could demonstrate in our numerical studies was the breathers. Despite repeated efforts, we could not find the solitons with a steady profile propagating in the NLC model at hand.
T2  - OPTICS EXPRESS
T1  - Breathing solitons in nematic liquid crystals
VL  - 14
DO  - https://doi.org/10.1364/OE.17.011698
ER  - 

@article{
author = "Strinić, A and Petrović, M and Timotijević, Dejan and Aleksic, N.B and Belic, M.R",
year = "2009",
abstract = "Dynamical and steady-state behavior of beams propagating in nematic liquid crystals (NLCs) is analyzed. A well-known model for the beam propagation and the director reorientation angle in a NLC cell is treated numerically in space and time. The formation of steady-state soliton breathers in a threshold region of beam intensities is displayed. Below the region the beams diffract, above the region spatiotemporal instabilities develop, as the input intensity and the material parameters are varied. Curiously, the only kind of solitons we could demonstrate in our numerical studies was the breathers. Despite repeated efforts, we could not find the solitons with a steady profile propagating in the NLC model at hand.",
journal = "OPTICS EXPRESS",
title = "Breathing solitons in nematic liquid crystals",
volume = "14",
doi = "https://doi.org/10.1364/OE.17.011698"
}

Strinić, A., Petrović, M., Timotijević, D., Aleksic, N.B,& Belic, M.R. (2009). Breathing solitons in nematic liquid crystals. in OPTICS EXPRESS, 14.
https://doi.org/https://doi.org/10.1364/OE.17.011698

Strinić A, Petrović M, Timotijević D, Aleksic N, Belic M. Breathing solitons in nematic liquid crystals. in OPTICS EXPRESS. 2009;14.
doi:https://doi.org/10.1364/OE.17.011698 .

Strinić, A, Petrović, M, Timotijević, Dejan, Aleksic, N.B, Belic, M.R, "Breathing solitons in nematic liquid crystals" in OPTICS EXPRESS, 14 (2009),
https://doi.org/https://doi.org/10.1364/OE.17.011698 . .

TY  - JOUR
AU  - Timotijević, Dejan
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2768
AB  - We study, both analytically and numerically, electromagnetic beam transmission through a layered structure that includes a waveguide slab of metamaterial with negative refraction. The resonant excitation of the leaky guided modes, via attenuated total reflection configuration, can lead to the formation of an anomalous lateral shift in the transmitted beam, as well as to the zero reflection (i.e., high or even total transparency). However, we demonstrate a trade-off between high transparency and high lateral beam shift.
PB  - Elsevier
T2  - Elsevier
T1  - Excitation of guided waves in materials with negative refraction
VL  - 30
DO  - 10.1016/j.optmat.2007.05.034
ER  - 

@article{
author = "Timotijević, Dejan",
year = "2008",
abstract = "We study, both analytically and numerically, electromagnetic beam transmission through a layered structure that includes a waveguide slab of metamaterial with negative refraction. The resonant excitation of the leaky guided modes, via attenuated total reflection configuration, can lead to the formation of an anomalous lateral shift in the transmitted beam, as well as to the zero reflection (i.e., high or even total transparency). However, we demonstrate a trade-off between high transparency and high lateral beam shift.",
publisher = "Elsevier",
journal = "Elsevier",
title = "Excitation of guided waves in materials with negative refraction",
volume = "30",
doi = "10.1016/j.optmat.2007.05.034"
}

Timotijević, D.. (2008). Excitation of guided waves in materials with negative refraction. in Elsevier
Elsevier., 30.
https://doi.org/10.1016/j.optmat.2007.05.034

Timotijević D. Excitation of guided waves in materials with negative refraction. in Elsevier. 2008;30.
doi:10.1016/j.optmat.2007.05.034 .

Timotijević, Dejan, "Excitation of guided waves in materials with negative refraction" in Elsevier, 30 (2008),
https://doi.org/10.1016/j.optmat.2007.05.034 . .

TY  - JOUR
AU  - Vukovic, S.M
AU  - Aleksic, N.B
AU  - Timotijević, Dejan
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2997
AB  - We investigate basic properties of linear guided modes in a waveguide slab with the core of a material with simultaneously negative effective permittivity and permeability surrounded by a normal dielectric cladding. The existence and dispersion of all possible types of guided modes have been studied in detail. We demonstrate that the two orthogonally polarized, TE and TM slow guided modes, with the same frequency and the same wave number can exist simultaneously. Their group velocities, however, can be parallel or anti-parallel.
T2  - OPTICS COMMUNICATIONS
T1  - Guided modes in left-handed waveguides
VL  - 281
DO  - https://doi.org/10.1016/j.optcom.2007.11.010
ER  - 

@article{
author = "Vukovic, S.M and Aleksic, N.B and Timotijević, Dejan",
year = "2008",
abstract = "We investigate basic properties of linear guided modes in a waveguide slab with the core of a material with simultaneously negative effective permittivity and permeability surrounded by a normal dielectric cladding. The existence and dispersion of all possible types of guided modes have been studied in detail. We demonstrate that the two orthogonally polarized, TE and TM slow guided modes, with the same frequency and the same wave number can exist simultaneously. Their group velocities, however, can be parallel or anti-parallel.",
journal = "OPTICS COMMUNICATIONS",
title = "Guided modes in left-handed waveguides",
volume = "281",
doi = "https://doi.org/10.1016/j.optcom.2007.11.010"
}

Vukovic, S.M, Aleksic, N.B,& Timotijević, D.. (2008). Guided modes in left-handed waveguides. in OPTICS COMMUNICATIONS, 281.
https://doi.org/https://doi.org/10.1016/j.optcom.2007.11.010

Vukovic S, Aleksic N, Timotijević D. Guided modes in left-handed waveguides. in OPTICS COMMUNICATIONS. 2008;281.
doi:https://doi.org/10.1016/j.optcom.2007.11.010 .

Vukovic, S.M, Aleksic, N.B, Timotijević, Dejan, "Guided modes in left-handed waveguides" in OPTICS COMMUNICATIONS, 281 (2008),
https://doi.org/https://doi.org/10.1016/j.optcom.2007.11.010 . .