TALBOT ASSISTED PATTERN-FORMATION IN A LIQUID-CRYSTAL FILM WITH SINGLE FEEDBACK MIRROR

被引:9
作者
SANTAMATO, E [1 ]
CIARAMELLA, E [1 ]
TAMBURRINI, M [1 ]
机构
[1] FDN UGO BORDONI,I-00142 ROME,ITALY
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 251卷
关键词
D O I
10.1080/10587259408027198
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
We investigated experimentally the spontaneous formation of regular patterns of filaments in a laser beam traversing a thin liquid crystal film placed in front of a single mirror. The transistion from hexagonal to roll-like pattern was experimentally investigated as a function of the laser beam incidence angle and mirror distance. Square patterns were observed by inserting a thin slit behind the mirror. Our observations strongly support a simple model for pattern formation based on Talbot effect.
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页码:127 / 143
页数:17
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