Recovery of wavefront from multi-shear interferograms with different tilts

被引:14
作者
Guo, Yunfeng [1 ,2 ,3 ]
Xia, Jianpei [1 ,2 ]
Ding, Jianping [1 ,2 ]
机构
[1] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China
[3] Qingdao Univ, Coll Phys Sci, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266071, Peoples R China
基金
中国国家自然科学基金;
关键词
RECONSTRUCTION; INTERFEROMETRY;
D O I
10.1364/OE.22.011407
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An improved multi-shear algorithm is proposed to reconstruct a two-dimensional wavefront from multiple phase differences measured by lateral shearing interferograms with different tilts. The effects of the tilt errors in the wavefront are analyzed and a compensation method is developed. Unbiased estimators are added to Fourier coefficients of the phase differences to eliminate the tilt errors adaptively. The algorithm is immune to the tilt errors and the wavefront under test can be recovered exactly. Computer simulation and optical test demonstrated that the proposed algorithm has higher recovery accuracy than the existing multi-shear algorithms. (C) 2014 Optical Society of America
引用
收藏
页码:11407 / 11416
页数:10
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