电寻址空间光调制器“黑栅”效应的消除方法  

METHODS OF ELIMINATING PIXELILATION EFFECT IN ELECTRO-ADDRESSABLE SPATIAL LIGHT MODULATOR

作　　者：颜树华[1] 戴一帆[1] 吕海宝[1] 李圣怡[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《光子学报》2002年第11期1421-1424,共4页Acta Photonica Sinica

基　　金：国家自然科学基金资助项目 ( 5 0 0 0 5 0 2 2 )

摘　　要：提出了两种消除电寻址空间光调制器由于低开口率所引起的“黑栅”效应的方法 :利用衍射微透镜阵列的方法和利用纯相位型光束整形器件阵列的方法 分析了这两种方法的基本原理 ,给出了微透镜阵列和光束整形器件阵列的设计思想 ,并比较了这两种方法的异同点 采用杨一顾相位恢复算法得到了光束整形结果 理论分析及仿真计算表明The two novel methods of clearing up the pixelilation effect caused by low fill factor in the electro-addressable spatial light modulator are proposed,which are the method of utilizing diffractive micro-lens arrays and the method of using phase-only controlled beam shaping elements arrays.The principles of two methods are analyzed,and the design ideas about diffractive micro-lens arrays and beam shaping elements arrays are given.Then,the similarities and differences between two methods are achieved.Finally,the according beam shaping result is obtained by using Yang-Gu algorithms for phase retrieval.Theoretical analyses and computing results show that these two methods can clear up effectively the black band between the neighboring pixels in the electro-addressable spatial light modulator.

关 键 词：电寻址 空间光调制器 “黑栅”效应 微透镜阵列 光束整形器件 二元光学 光学信息处理 

分 类 号：TN761[电子电信—电路与系统] O438[机械工程—光学工程]