基于压缩调制模式的波前重构  

Wavefront Reconstruction Based on Truncated Modulation Modes

作　　者：庞博清 王帅[1,3] 杨平[1,3] Pang Boqing;Wang Shuai;Yang Ping(Key Laboratory of Adaptive Optics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;z University of Chinese Academy of Sciences,Beijing 100049,Chin;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China)

机构地区：[1]中国科学院自适应光学重点实验室,四川成都610209 [2]中国科学院大学,北京100049 [3]中国科学院光电技术研究所,四川成都610209

出　　处：《光学学报》2018年第9期27-34,共8页Acta Optica Sinica

基　　金：中科院创新基金(CXJJ16M208)

摘　　要：介绍了一种利用压缩调制模式提高探测频率的波前重构方法。该方法选取与待测光场实部线性相关度较高的Walsh函数项进行系数求解,实现对光场实部的重构;同时,基于空间光强分布对光场虚部进行重构,以避免对Walsh函数乘法定理的依赖和额外调制模式的使用。该方法充分压缩了波前重构过程中所需的调制模式数量,提升了波前采样频率。数值仿真结果表明,该方法能够将波前采样时间缩短为原来的1/12。We propose a wavefront reconstruction method which improves the wavefront sensing frequency,by compressing the number of the modulation functions.The Walsh functions which are highly correlated with the real part of the incident light field are selected,and their coefficients are calculated relatively.Thus,the real part of the light field is reconstructed.Meanwhile,the imaginary part of the optical field is reconstructed based on the light intensity distribution,which avoids the dependence on the multiplication theorem of the Walsh function and the use of the extra modulation modes.The method sufficiently compresses the number of modulation modes greatly in the wavefront reconstruction and improves the wavefront sampling frequency.The numerical simulation results indicate that the sampling time of wavefront can be decreased to 1/12 based on the proposed method.

关 键 词：自适应光学 波前传感 相位测量 WALSH函数 

分 类 号：O436[机械工程—光学工程]