反射式液晶光阀用于激光束空间整形可行性研究

丁磊; 赵润昌; 李明中; 隋展; 贾伟; 唐晓东

强激光与粒子束, 2005, 17 (6): 849, 网络出版: 2006-04-28

反射式液晶光阀用于激光束空间整形可行性研究

Feasibility study of liquid crystal light valve on beam-shaping

论文大纲

丁磊赵润昌李明中隋展贾伟唐晓东

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

反射式液晶光阀空间整形振幅调制位相调制 Liquid crystal light valve Beam-shaping amplitude modulation Phase modulation Spatial transmission

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.

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.

参考文献

[1] Chen H X, Sui Z, Chen Z P, et al. Laser beam shaping using liquid crystal spatial light modulator[J]. Acta Optica Sinica, 2001, 21(9):1107-1111.

[2] Lu K, Saleh B E A. Theory and design of the liquid crystal TV as an optical spatial phase modulator[J]. Opt Eng, 1990, 29:240-246.

[3] Coy J A, Zaldarriaga M, Grosz D F, et al. Characterization of a liquid crystal television as a programmable spatial light modulator[J]. Opt Eng, 1996, 35:15-19.

[4] Kirsch J C, Gregory D A, Thie M W, et al. Modulation characteristics of the Epson liquid crystal television[J]. Opt Eng, 1992, 5:963-970.

[5] Laude V, Maze S, Chavel P, et al. Amplitude and phase coding measurement of a liquid crystal television[J]. Opt Commun, 1993, 103:33-38.

[6] Neto L G, Roberge D, Sheng Y. Full-range, continuous,complex modulation by the use of two coupled-mode liquid-crystal televisions[J]. Appl Opt, 1996, 35:4567-4576.

[7] Liu H K, Chao T H. Liquid crystal television spatial light modulators[J]. Appl Opt, 1989, 28:4772-4780.

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. 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.

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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