Dynamics of light induced reorientation of nematic liquid crystals in spatially confined beams

被引：5
|
作者：
Brasselet, E [1 ]
Galstian, T
Dubé, LJ
机构：
[1] ENS Cachan, Lab Photon Quant & Mol, UMR 8537, F-94235 Cachan, France
[2] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1K 7P4, Canada
[3] Univ Paris 06, Lab Dynam Ions Atomes & Mol, F-75252 Paris 05, France
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2004年 / 421卷
关键词：
finite-beam excitation; instabilities; light angular momentum; molecular reorientation; walk-off effects;
D O I：
10.1080/15421400490501400
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Optically induced reorientation dynamics in a nematic liquid crystal is investigated for circularly polarized laser beams with spot sizes smaller than the sample thickness. Various dynamical regimes, such as periodic, quasi-periodic, intermittent, self-organized and possibly chaotic regimes are observed. The role finite beam size is identified and a qualitative interpretation based on the spatial walk-off of the ordinary and extraordinary beams arising from double refraction phenomenon is proposed.
引用
收藏
页码：69 / 80
页数：12
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