Study of Lasing in Liquid-Crystal Systems with Microgratings
- Autores: Shtykov N.1, Palto S.1, Umanskii B.1, Geivandov A.1
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Afiliações:
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
- Edição: Volume 63, Nº 4 (2018)
- Páginas: 633-640
- Seção: Liquid Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/192751
- DOI: https://doi.org/10.1134/S1063774518040259
- ID: 192751
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Resumo
Waveguide lasing in a layer of nematic liquid crystal (NLC) doped with a dye has been experimentally observed. A chromium micrograting with a period of 1.76 μm has been deposited on the surface one of the cell substrates to provide a distributed feedback (DFB) and partially extract laser radiation to a quartz substrate. The DFB provides lasing in the ninth diffraction order for waveguide TM modes. Laser radiation is observed at the output of the substrate end face at an angle of 67.0° ± 1.5° with respect to the normal to the waveguide plane. An increase in voltage across the micrograting electrodes leads to red-shifted multimode lasing. A numerical simulation of a structure imitating the experimental cell has shown good agreement between the calculation results and experimental data.
Sobre autores
N. Shtykov
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
Autor responsável pela correspondência
Email: nshtykov@mail.ru
Rússia, Moscow, 119333
S. Palto
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
Email: nshtykov@mail.ru
Rússia, Moscow, 119333
B. Umanskii
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
Email: nshtykov@mail.ru
Rússia, Moscow, 119333
A. Geivandov
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
Email: nshtykov@mail.ru
Rússia, Moscow, 119333