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This article is cited in 3 scientific papers (total in 3 papers)
Lasers
Lasing in a nematic liquid crystal cell with an interdigitated electrode system
N. M. Shtykov, S. P. Palto, B. A. Umanskii, A. R. Geivandov Institute of Cristallography Russian Academy of Sciences, Moscow
Abstract:
Waveguide lasing in a layer of a dye-doped nematic liquid crystal has been observed. The liquid-crystal layer was sandwiched between a quartz substrate and a glass cover plate on whose surface was deposited an interdigitated electrode system. This system had a period of 3.75 μm and played a dual role, namely, it created a spatial periodicity of the waveguide medium refractive index (thus creating distributed feedback) and served as a diffraction grating coupling out a part of waveguide radiation into the glass cover plate. The distributed feedback ensured lasing in the 18th diffraction order for the TE modes and in the 19th order for the TM modes of the waveguide. The generated radiation was observed at the exit from the glass plate end face at the angles to the waveguide plane of 33.1 ± 1.5° for TM modes and 21.8 ± 1.8° for TE modes. The intensity and position of the TE emission line showed no regular dependence on the voltage on the electrodes. In the case of TM radiation, an increase in the voltage led to a short-wavelength shift of the laser line and to a decrease in its intensity.
Keywords:
liquid crystals, dye lasers, planar dielectric waveguides, interdigitated electrodes.
Received: 14.11.2014
Citation:
N. M. Shtykov, S. P. Palto, B. A. Umanskii, A. R. Geivandov, “Lasing in a nematic liquid crystal cell with an interdigitated electrode system”, Kvantovaya Elektronika, 45:4 (2015), 305–311 [Quantum Electron., 45:4 (2015), 305–311]
Linking options:
https://www.mathnet.ru/eng/qe16158 https://www.mathnet.ru/eng/qe/v45/i4/p305
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Abstract page: | 217 | Full-text PDF : | 82 | References: | 28 | First page: | 11 |
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