非均匀光强对曲率型自适应光学系统的影响  

Influence of nonuniform intensity on curvature adaptive optics system

作　　者：黄盛炀[1] 习锋杰[1] 宁禹[1] 刘长海[1] 姜宗福[1] 

机构地区：[1]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2012年第1期9-12,共4页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(60908027)

摘　　要：在高斯光强和光强存在正态随机起伏情况下,研究了一种37单元的曲率型自适应光学系统对低阶Zernike像差的校正效果,并和均匀光强时的校正效果进行了比较。光强为高斯分布时,光强的不均匀性对Zernike像差的校正带来了一定的影响,对于曲率为零的Zernike像差影响较小,对曲率不为零的Zernike像差影响较大。光强存在正态随机起伏时,对各阶Zernike像差的校正影响较小,曲率为零的Zernike像差的校正效果好于曲率不为零的Zernike像差的校正效果。结果表明在光强起伏不严重的情况下,该37单元曲率型自适应光学系统对低阶Zernike像差可以较好地校正。With Gaussian intensity distribution or normal random intensity distribution, the correction of Zernike aberrations by a 37-element curvature adaptive optics system was simulated, and compared to the correction with uniform intensity distribution. In the case of Gaussian intensity distribution, the nonuniform of intensity brings about some influence into the correction of Zernike aberrations. The influence on Zernike aberrations with non-zero curvature is more serious than that to Zernike aberrations with zero curvature. In the case of normal random intensity distribution, the influence on Zernike aberrations is small. The correction of Zernike aberrations with zero curvature is more accurate than that for the non-zero curvature aberrations. The results indicate that the 37-element curvature adaptive optics system can correct low order Zernike aberrations when the nonuniform intensity is not very serious.

关 键 词：自适应光学 波前曲率传感器 曲率型变形镜 波前复原算法 Zernike像差 

分 类 号：O438[机械工程—光学工程]