Spatial temporal analysis of electrically-addressable phase-only spatial light modulator

被引：4
|
作者：
Mukozaka, N
Ye, BQ
Yoshida, N
机构：
[1] Hamamatsu Photon KK, Cent Res Lab, Hamakita 4348601, Japan
[2] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China
来源：
OPTICAL REVIEW | 2003年 / 10卷 / 05期
关键词：
spatial light modulator; liquid crystal display; phase-only modulator; phase modulation; amorphous silicon; liquid crystal;
D O I：
10.1007/s10043-003-0361-8
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An optically addressed parallel-aligned nematic-liquid-crystal spatial light modulator (PAL-SLM) has been studied as a dynamic phase-only modulation device. A computer control feature of the spatial light modulator is strongly desired for practical applications. For those demands, an electrically-addressable phase-only spatial light modulator has been developed to combine a liquid crystal display (LCD) with a PAL-SLM (LCD-coupled PAL-SLM) and its performance has been reported. However, a temporal characteristic especially two-dimensional (2D) response has not been discussed before. In this paper, 2D response analysis system has been constructed by using a high-speed complementary Metal-Oxide-Semiconductor (CMOS) camera (1000 frames/sec) and the 2D-modulation characteristic of the LCD-coupled PAL-SLM has been observed. As a result, the LCD has a spatially non-uniform modulation characteristic due to a scanning addressing. It has the potential to cause problems in high speed switching for a computer generated hologram. On the other hand, the spatial non-uniformity has not been observed with the LCD-coupled PAL-SLM.
引用
收藏
页码：361 / 365
页数：5
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