强激光与粒子束2011，Vol.23Issue(10)：2573-2577,5.DOI:10.3788/HPLPB20112310.2573
相位光栅型曲率传感器的波前校正算法
Reconstruction algorithm for wavefront curvature sensor with phase grating
摘要
Abstract
An algorithm is proposed to reconstruct wavefront using the whole spatial distribution of curvature signals measured by curvature sensor with grating. The curvature signal's spatial distributions of curvature deformable mirror's response functions are used to fit the measured curvature signal, the control voltages are obtained by the least square method. and then the distorted wavefront is corrected. A 41-element curvature adaptive optic system is simulated to correct the distorted wavefront by the whole signal algorithm. The results show that the 4th to 28th order Zernike aberrations can be corrected, and Zernike aberrations with zero curvature can be reconstructed more accurately than the ones with non-zero curvature. Compared with the signal-divided algorithm, the whole signal algorithm gets a similar performance for correcting Zernike aberrations. And in the whole signal algorithm, the demand of calibration is reduced for the curvature distribution is not necessary to be divided for sensing.关键词
自适应光学/曲率型自适应光学系统/相位光栅型曲率传感器/波前校正算法/Zernike 像差Key words
adaptive optics/curvature adaptive optics/ wavefront curvature sensor with phase grating/ wavefront reconstruction algorithm/Zernike aberrations分类
数理科学引用本文复制引用
黄盛炀,习锋杰,宁禹,刘长海,姜宗福..相位光栅型曲率传感器的波前校正算法[J].强激光与粒子束,2011,23(10):2573-2577,5.基金项目
国家自然科学基金项目(60908027) （60908027）
