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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中图分类号：
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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