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Study of light-induced reorientation of the nematic liquid crystal director by birefringence dynamics

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Abstract

It is proposed to apply the birefringence method to measure the threshold of the light-induced Freedericksz transition and the nonlinearity enhancement factor of nematic liquid crystals by director relaxation dynamics in the light field. A birefringence change is recorded by interference of ordinary and extraordinary components of the light beamaffecting the liquid crystal director orientation. The Freedericksz transition thresholds and nonlinearity enhancement factors are measured for the samples doped with comb-shaped polymers with various degrees of polymerization. The determined thresholds are in agreement with the results obtained by the aberrational self-action method.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    I. A. Budagovsky, A. S. Zolot’ko, T. E. Koval’skaya, M. P. Smayev & S. A. Shvetsov

  2. Moscow State University, Moscow, 119991, Russia

    T. E. Koval’skaya & N. I. Boiko

  3. Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow Oblast, 141700, Russia

    S. A. Shvetsov

  4. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia

    M. I. Barnik

Authors
  1. I. A. Budagovsky
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  2. A. S. Zolot’ko
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  3. T. E. Koval’skaya
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  4. M. P. Smayev
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  5. S. A. Shvetsov
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  6. N. I. Boiko
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  7. M. I. Barnik
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Corresponding author

Correspondence to A. S. Zolot’ko.

Additional information

Original Russian Text © I.A. Budagovsky, A.S. Zolot’ko, T.E. Koval’skaya, M.P. Smayev, S.A. Shvetsov, N.I. Boiko, M.I. Barnik, 2013, published in Kratkie Soobshcheniya po Fizike, 2013, Vol. 40, No. 1, pp. 10–19.

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Budagovsky, I.A., Zolot’ko, A.S., Koval’skaya, T.E. et al. Study of light-induced reorientation of the nematic liquid crystal director by birefringence dynamics. Bull. Lebedev Phys. Inst. 40, 6–11 (2013). https://doi.org/10.3103/S1068335613010028

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  • DOI: https://doi.org/10.3103/S1068335613010028

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