| 反射式液晶光阀用于激光束空间整形可行性研究 |
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| 引用本文： | 丁磊,赵润昌,李明中,隋展,贾伟,唐晓东.反射式液晶光阀用于激光束空间整形可行性研究[J].强激光与粒子束,2005,17(6):849-852. |
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| 作者姓名： | 丁磊 赵润昌 李明中 隋展 贾伟 唐晓东 |
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| 作者单位： | 中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900 |
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| 基金项目： | 国防科技基础研究基金资助课题 |
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| 摘 要： | 从理论和实验两方面对一种反射式液晶光阀（LCOS）的调制特性进行了研究。着重研究了在高功率激光系统中，反射式液晶光阀作为空间整形器件面临的一些应用问题，特别是它的各种调制特性、整形能力以及对于光束质量的影响。研究发现，与透射式液晶光阀相比，反射式液晶光阀有着明显的优势，效率达到42%，远远优于透射式液晶光阀10%的效率，从而能够实现系统的大幅度简化，是一种非常有潜力的空间光调制器件。
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| 关 键 词： | 反射式液晶光阀 空间整形 振幅调制 位相调制 |
| 文章编号： | 1001-4322(2005)06-0849-04 |
| 收稿时间： | 2005/3/3 |
| 修稿时间： | 2005年3月3日 |
Feasibility study of liquid crystal light valve on beam-shaping |
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| DING Lei,ZHAO Run-chang,LI Ming-Zhong,SUI Zhan,JIA Wei,TANG Xiao-dong.Feasibility study of liquid crystal light valve on beam-shaping[J].High Power Laser and Particle Beams,2005,17(6):849-852. |
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| Authors: | DING Lei ZHAO Run-chang LI Ming-Zhong SUI Zhan JIA Wei TANG Xiao-dong |
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| Institution: | Research Center of Laser Fusion, P.O.Box 919-988, Mianyang 621900, China |
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| Abstract: | A novel method of beam shaping by liquid crystal light valve (LCOS) is introduced in this paper. The incident phase modulation and spatial transmission properties of a shaped beam are studied, as well as the modulation characteristics of the liquid crystal light valve. There is no any additional phase modulation on the shaped beam when a LCOS is used as the beam shaper. A Garssian beam has successfully been converted to a square flattop super-Gaussian beam by use of a LCOS. The results show that the LCOS of a liquid crystal projector working as a programmable spatial light amplitude modulation is feasible. An officiency of 42% can be achieved. |
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| Keywords: | Liquid crystal light valve Beam-shaping amplitude modulation Phase modulation Spatial transmission |
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