Liquid-crystal blazed-grating beam deflector

被引:114
作者
Wang, X [1 ]
Wilson, D
Muller, R
Maker, P
Psaltis, D
机构
[1] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA
[2] CALTECH, Jet Prop Lab, Ctr Space Microelect Technol, Pasadena, CA 91109 USA
关键词
D O I
10.1364/AO.39.006545
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A transmission-type nonmechanical multiple-angle beam-steering device that uses liquid-crystal blazed grating has been developed. Sixteen steering angles with a contrast ratio of 18 has been demonstrated. A detailed analysis of the Liquid-crystal and poly(methyl methacrylate) blazed-grating deflector was carried out to provide guidance during the deflector's development. A manufacturing offset compensation technique is proposed to improve the device's performance greatly. A hybrid approach utilizing electrically generated blazed grating combined with the cascading approach described here yields in excess of 500 deflecting angles. (C) 2000 Optical Society of America OCIS codes: 050.1970, 230.3720, 230.2090, 050.1940.
引用
收藏
页码:6545 / 6555
页数:11
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