Faculty of Physics
M.V.Lomonosov Moscow State University
Regular Article

# Optical cross modulation in nematic liquid-crystal films: application to $\chi ^{(3)}$ dispersion measurement on Rayleigh-line flank

## F.N. Gadzhiev, N.I. Koroteev, G.A. Paityan

### Moscow University Physics Bulletin 1988. 43. N 2. P. 27

• Article
Annotation

Amplitude modulation is transferred from one laser beam to another in a planar-oriented mixture of nematic liquid crystals to determine the dispersion in the cubic nonlinearity $\chi ^{(3)}$ at a Rayleigh-line flank with a resolution of a few Hz. The anomalously large values are due in part to the collective behavior in the orientation ordering and in part to the anomalously large $\partial {\epsilon} / \partial T$ and dichroism. Measurements have been made on $x_{ijk}^{3}$, relaxation time, elastic moduli, and thermal diffusivity parallel and transverse to the liquid-crystal director.

Rissian citation:
Ф.Н. Гаджиев, Н.И. Коротеев, Г.А. Пайтян.
Вестн. Моск. ун-та. Сер. 3. Физ. Астрон. 1988. № 2. С. 27.
Authors
F.N. Gadzhiev, N.I. Koroteev, G.A. Paityan
Department of General Physics and Wave Processes, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia

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