TY  - CONF
AU  - Kovačević, Aleksander
AU  - Pajić, Tanja
AU  - Pavlović, Danica
AU  - Stanić, Marina
AU  - Lekić, Marina
AU  - Nikolić, Stanko
AU  - Jelenković, Branislav
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2411
AB  - In the experiments, the 532 nm CW laser beam is directed to the glass cuvette that is filled either with the medium or with algae suspended in the medium. We have monitored the laser beam diameter at the entrance and exit of the cuvette, and its axial profile through entire cell length. The concentration has been determined by optical microscopy and optical density and has been varied between 10^6 and 10^8 cm-3. The concentration of the algae and the laser beam power affect the beam radius. Our preliminary results have shown the effect of light self-trapping, i.e., the decrease of laser diameter when the algae concentration exceeds 10^6 cm-3 while laser power is above 1 W. The difference of the refractive indexes of the algae and the medium can induce optical trapping of algae, which subsequently changes the concentration of the algae within the laser beam. This in turn can explain different behavior of the beam in the medium with and without algae.
PB  - Institute of Physics Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
C3  - VIII International School and Conference on Photonics PHOTONICA2021 & HEMMAGINERO workshop, 23 - 27 August 2021
T1  - Narrowing of laser beam propagating through biological suspension
EP  - 75
SP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2411
ER  - 

@conference{
author = "Kovačević, Aleksander and Pajić, Tanja and Pavlović, Danica and Stanić, Marina and Lekić, Marina and Nikolić, Stanko and Jelenković, Branislav",
year = "2021",
abstract = "In the experiments, the 532 nm CW laser beam is directed to the glass cuvette that is filled either with the medium or with algae suspended in the medium. We have monitored the laser beam diameter at the entrance and exit of the cuvette, and its axial profile through entire cell length. The concentration has been determined by optical microscopy and optical density and has been varied between 10^6 and 10^8 cm-3. The concentration of the algae and the laser beam power affect the beam radius. Our preliminary results have shown the effect of light self-trapping, i.e., the decrease of laser diameter when the algae concentration exceeds 10^6 cm-3 while laser power is above 1 W. The difference of the refractive indexes of the algae and the medium can induce optical trapping of algae, which subsequently changes the concentration of the algae within the laser beam. This in turn can explain different behavior of the beam in the medium with and without algae.",
publisher = "Institute of Physics Belgrade, Pregrevica 118, 11080 Belgrade, Serbia",
journal = "VIII International School and Conference on Photonics PHOTONICA2021 & HEMMAGINERO workshop, 23 - 27 August 2021",
title = "Narrowing of laser beam propagating through biological suspension",
pages = "75-75",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2411"
}

Kovačević, A., Pajić, T., Pavlović, D., Stanić, M., Lekić, M., Nikolić, S.,& Jelenković, B.. (2021). Narrowing of laser beam propagating through biological suspension. in VIII International School and Conference on Photonics PHOTONICA2021 & HEMMAGINERO workshop, 23 - 27 August 2021
Institute of Physics Belgrade, Pregrevica 118, 11080 Belgrade, Serbia., 75-75.
https://hdl.handle.net/21.15107/rcub_rimsi_2411

Kovačević A, Pajić T, Pavlović D, Stanić M, Lekić M, Nikolić S, Jelenković B. Narrowing of laser beam propagating through biological suspension. in VIII International School and Conference on Photonics PHOTONICA2021 & HEMMAGINERO workshop, 23 - 27 August 2021. 2021;:75-75.
https://hdl.handle.net/21.15107/rcub_rimsi_2411 .

Kovačević, Aleksander, Pajić, Tanja, Pavlović, Danica, Stanić, Marina, Lekić, Marina, Nikolić, Stanko, Jelenković, Branislav, "Narrowing of laser beam propagating through biological suspension" in VIII International School and Conference on Photonics PHOTONICA2021 & HEMMAGINERO workshop, 23 - 27 August 2021 (2021):75-75,
https://hdl.handle.net/21.15107/rcub_rimsi_2411 .