Phase Modulation Characteristics Analysis of Optically-Addressed Parallel-Aligned Nematic Liquid Crystal Phase-Only Spatial Light Modulator Combined with a Liquid Crystal Display

被引：0
作者：
Fanghong Li
Naohisa Mukohzaka
Narihiro Yoshida
Yasunori Igasaki
Haruyoshi Toyoda
Takashi Inoue
Yuji Kobayashi
Tsutomu Hara
机构：
[1] Hamamatsu Photonics K.K.,Central Research Laboratory
[2] State Key Laboratory of Modern Optical Instrumentation,undefined
[3] Zhejiang University,undefined
来源：
Optical Review | 1998年 / 5卷
关键词：
spatial light modulator; liquid crystal; amorphous silicon; phase modulation; liquid crystal display; diffraction efficiency;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An optically addressed parallel-aligned nematic-liquid-crystal spatial light modulator (PAL-SLM) has been studied as a dynamic phase-only light modulation device. The phase modulation characteristics of the PAL-SLM using a liquid crystal display (LCD) as an addressing mask were investigated by analyzing diffraction efficiencies resulting from binary gratings projected from the LCD. A more than 2π phase-only modulation depth was achieved. The highest first-order diffraction efficiency of approximately 38% was also obtained; this is close to the theoretical limit. The experimental results of diffraction efficiencies depending on the phase modulation depth are in good agreement with the simulation for the system operation.
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页码：174 / 178
页数：4
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