利用随机二元纯相位调制重构复杂光场波前  

Reconstruction of Complex Wave-Front by Random Binary Phase Modulation

作　　者：徐宁汉[1] 谭峭峰[1] 金国藩[1] 

机构地区：[1]清华大学精密测试技术与仪器国家重点实验室,北京100084

出　　处：《中国激光》2010年第7期1800-1806,共7页Chinese Journal of Lasers

基　　金：国家863计划(2008AA8040506C)资助课题

摘　　要：在菲涅耳衍射区和夫琅禾费衍射区,分别利用输入面上的多个随机二元纯相位调制,获得多个输出面强度信息,在不需要输入面强度先验信息的基础上,基于迭代算法高精度重构了复杂光场的波前。讨论了菲涅耳衍射区和夫琅禾费衍射区各自特点和适用范围。Without prior intensity information in input plane,one method using random binary phase modulation and iterative algorithm is adopted to reconstruct complex wave-front in Fresnel and Fraunhofer diffraction domains,respectively.Three or more diffraction patterns in Fresnel or Fraunhofer domains with different random binary phase masks are used to successfully retrieve the complex wave-front.The differences of the methods used in Fresnel or Fraunhofer diffraction domains are finally discussed in detail.

关 键 词：物理光学 波前重构 相位调制 复杂光场 迭代算法 

分 类 号：O436.1[机械工程—光学工程]