液晶与显示2017，Vol.32Issue(3)：234-239,6.DOI:10.3788/YJYXS20173203.0234
基于液晶空间光调制器的相位差波前探测技术定量研究
Quantitative analysis on phase diversity technique based on liquid crystal spatial light modulator
摘要
Abstract
In order to study phase diversity (PD) technique quantitatively, numerical simulations and experiments has been performed.In numerical simulations, 0.1λ~0.5λ root-mean-square (RMS) random phase aberrations are used to investigate the PD technique from images degraded by these random phase aberrations.Root-mean-square errors (RMSE) of phase aberrations detected by PD is less than 10-5λ, and the reconstructed images become much better than the degraded focus-plane images.An experimental system based on Liquid Crystal Spatial Light Modulator (LC-SLM) is established,and the problem of lacking quantitative data for atmospheric turbulence phase screen can be solved effectively.RMSE of the phase aberrations of the experimental data is0.091λ for which the RMS of original phase aberrations is 0.306λ.The estimated wave-front is very similar to original phase aberrations.The experimental and simulation results agree well.Several reasons are also analyzed which could result in experimental error, and this work also gets technical experiences for the application of PD technique in liquid crystal adaptive system in future.关键词
相位差探测技术/波前探测/图像重建Key words
phase diversity technique/wave-front sensing/image reconstruction分类
数理科学引用本文复制引用
李小平,胡五生,于洪丽,徐梓浩,张佩光,杨程亮,宣丽..基于液晶空间光调制器的相位差波前探测技术定量研究[J].液晶与显示,2017,32(3):234-239,6.基金项目
国家自然科学基金(No.61405194) Supported by National Natural Science Foundation of China(No.61405194) （No.61405194）
