OBSERVATION OF LIGHT-INDUCED HYDRODYNAMIC INSTABILITIES IN A NEMATIC LIQUID-CRYSTAL IN A SINGLE-MODE LASER-BEAM

被引：0

作者：

GALSTYAN, TV

DRNOYAN, VE

ALAVERDYAN, RB

ARAKELYAN, SM

CHILINGARYAN, YS

机构：

来源：

JETP LETTERS | 1992年 / 55卷 / 07期

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O4 [物理学];

学科分类号：

0702 ;

摘要：

Light-induced hydrodynamic instabilities have been discovered and studied in a nematic liquid crystal which is initially in a state of uniform orientation. The instabilities occur when a single-mode laser beam excites convective flows and dynamic orientation structures with a complex (and controllable) topology. These structures lead to a self-induced diffraction and to a scattering of light with an optical bistability. These effects stem exclusively from a multiple internal feedback which arises in a strongly absorbing nematic liquid crystal. These effects are observed in an all-optical experiment, without any additional quasistatic fields or initial temperature gradients.

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页码：396 / 402

页数：7

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