强激光与粒子束2012，Vol.24Issue(6)：1324-1328,5.DOI:10.3788/HPLPB20122406.1324
反射式液晶空间光调制器电控光束偏转
Electro-controllable optical beam deflection employing reflective liquid crystal spatial light modulator
摘要
Abstract
An electro-controllable spatial light modulator of 8 μm spatial resolution was employed to deflect the 632 nm He-Ne laser beam to high steering angle. The phase shift characteristic of the modulator related to the applied gray level was measured by co-focal interferometry and the maximum phase shift is 3π. According to the principle of binary optics. Different phase models were designed to deflect the incident laser beam. The incident laser beam can be deflected by 10 mrad apart from the incident laser when the phase level is eight, and the diffraction efficiency is high as 46%. The experimental and numerical results indicate that beam deflection with large angle can be achieved by employing the reflective liquid crystal phase-mode spatial light modulator, and the diffraction efficiency is mainly limited by the fill factor and the fly-back region in the liquid crystal cell.关键词
二元光学/空间光调制器/干涉条纹/光束偏转/衍射效率Key words
binary optics/spatial light modulator/interference pattern/laser beam deflection/diffraction efficiency分类
数理科学引用本文复制引用
赵祥杰,张大勇,骆永全..反射式液晶空间光调制器电控光束偏转[J].强激光与粒子束,2012,24(6):1324-1328,5.基金项目
中国工程物理研究院科学技术发展基金项目(2010B0401049) （2010B0401049）
