| 斜入射液晶空间光调制器的特性 |
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| 引用本文： | 叶必卿,陈军,福智昇央,伊ケ崎泰则,井上卓,原勉. 斜入射液晶空间光调制器的特性[J]. 中国激光, 2006, 33(5): 87-590 |
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| 作者姓名： | 叶必卿 陈军 福智昇央 伊ケ崎泰则 井上卓 原勉 |
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| 作者单位： | 1. 浙江大学现代光学仪器国家重点实验室,浙江,杭州,310027
2. 浜松光子株式会社,日本 |
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| 摘 要： | 用读出光斜入射到液晶空间光调制器(LC-SLM)的读出面,是一种有效的提高空间光调制器(SLM)读出效率的方法。测量了读出光以不同角度入射到液晶空间光调制器的读出面上时,相位调制深度与写入光强的关系、衍射效率与二值光栅对比度的关系。得到随着入射角度的增加,最大相位调制深度减小,而衍射效率变化并不明显。在45°时有最大相位调制深度2.0936π和35.4%的正一级衍射效率。
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| 关 键 词： | 信息光学 液晶空间光调制器 斜入射 |
| 文章编号： | 0258-7025（2006）05-0587-04 |
| 收稿时间： | 2005-05-26 |
| 修稿时间： | 2005-11-13 |
Oblique-Incidence Characteristic of Parallel-Aligned Nematic-Liquid-Crystal Spatial Light Modulator |
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| YE Bi-qing,CHEN Jun,Norihiro Fukuchi,Yasunori Igasaki,Takashi Inoue,Tsutomu Hara. Oblique-Incidence Characteristic of Parallel-Aligned Nematic-Liquid-Crystal Spatial Light Modulator[J]. Chinese Journal of Lasers, 2006, 33(5): 87-590 |
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| Authors: | YE Bi-qing CHEN Jun Norihiro Fukuchi Yasunori Igasaki Takashi Inoue Tsutomu Hara |
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| Affiliation: | 1 State Key Laboratory of Modem Optical Instrumentation, Zhejiang University, Hangzhou, Zhejiang 310027, China; 2 Hamamatsu Photonics K. K. , Japan |
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| Abstract: | It is a valid way to improve the read-out light efficiency of spatial light modulator that the incident read-out light obliquely enters the read-out plane of the liquid crystal spatial light modulator. With different incident angles, the relations of the phase modulation depth and the write-in light intensity and of the diffraction efficiency and the contrast of the binary grating are measured. It is found that, with increasing incident angle, the maximum depth of the phase modulation decreases, but obvious change of the diffraction efficiency does not occur. With 45° incident angle, the maximum depth of the phase modulation reaches 2.0936π, and the positive first order diffraction efficiency is 35.4%. |
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| Keywords: | information optics liquid crystal spatial light modulator oblique incidence |
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