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9 Result(s)

within N. N. Sobolev Remove this filter Physics Remove this filter Optics, Lasers, Photonics, Optical Devices Remove this filter

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  1. No Access

    Chapter

    The Influence of the Finite Size of the Light Spot on the Laser Induced Reorientation of Liquid Crystals

    The threshold intensity for the laser induced deformation of nematic liquid crystals is calculated as a function of the spot size of the illuminating beam. It is shown, that due to the small size of the light ...

    L. Csillag, I. Jánossy, V. F. Kitaeva, N. Kroo… in Opticals Effects in Liquid Crystals (1991)

  2. No Access

    Chapter

    Reorientation of Liquid Crystals by Superposed Optical and Quasistatic Electric Fields

    The electric field of a CW laser beam can reorient a nematic liquid crystal. Experiments on the influence of a superposed quasistatic electric field are reported showing that this can reinforce or weaken the l...

    L. Csillag, N. Éber, I. Jánossy, N. Kroó… in Opticals Effects in Liquid Crystals (1991)

  3. No Access

    Chapter

    The effect of an optical field on the nematic phase of the liquid crystal OCBP

    We have observed a complex structure and an extraordinarily large divergence (30–40°) of an argon-laser beam emerging from an OCBP crystal placed at a focal constriction. The experimental results can be explai...

    A. S. Zolot’ko, V. F. Kitaeva, N. Kroo… in Opticals Effects in Liquid Crystals (1991)

  4. No Access

    Chapter

    Undamped oscillations of NLC director in the field of an ordinary light wave

    We have investigated experimentally some characteristic features of orientational aberration self-focusing of an ordinary light wave in a homotropically oriented NLC. A qualitative explanation of these feature...

    A. S. Zolot’ko, V. F. Kitaeva, N. Kroo… in Opticals Effects in Liquid Crystals (1991)

  5. No Access

    Article

    Kinetics of formation of the CO2 molecule distributions over the vibrational-rotational levels in the active medium of a waveguide CO2 laser

    I. I. Zasavitskii, R. Sh. Islamov, M. A. Kerimkulov… in Journal of Soviet Laser Research (1990)

  6. No Access

    Article

    Waveguide gas lasers with frequency-selective cavities

    Frequency-selective cavities of waveguide gas lasers are investigated theoretically and experimentally. The problem of finding the field distribution and the radiation loss in a cavity with a diffraction grati...

    V. N. Beltyugov, A. A. Kuznetsov, V. N. Ochkin… in Journal of Soviet Laser Research (1989)

  7. No Access

    Article

    Guided waves and IR lasers

    H. A. Haus, E. P. Ippen, A. Lattes, F. J. Leonberger, S. Gnepf… in Applied Physics B (1982)

  8. No Access

    Article

    Gasdynamic CS2 laser with an aim of increasing the efficiency and expanding the spectral range of lasers of this type

    The gasdynamic CS2 laser is investigated theoretically and experimentally. It is theoretically demonstrated that the efficiency of the gasdynamic lasers can be increased by using molecules with lower-lying laser ...

    A. Yu. Volkov, A. I. Demin, V. N. Epikhin… in Journal of Soviet Laser Research (1982)

  9. No Access

    Article

    Analysis of data on the vibrational-relaxation constants in CO2−N2−H2O mixtures, and optimization of a gasdynamic CO2 laser

    The optimum stagnation parameters and compositions of the C02-N2-H20 mixture are optimized on the basis of data on the vibrational-relaxation constants. The influence of the uncertainty in the relaxation constant...

    A. Yu. Volkov, A. I. Demin, A. N. Logunov… in Journal of Soviet Laser Research (1982)