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Curvature wavefront sensing based on a single defocused image and intensity compensation
ZHIXU WU1,2,3,4; HUA BAI2,3; XIANGQUN CUI2,3
2016-03
Source PublicationApplied Optics
Volume55Issue:10Pages:2791-2799
Abstract
Curvature wavefront sensing usually requires the measurement of two defocused images at equal distances before and after the focus. In this paper, a new wavefront recovery algorithm based on only one defocused image is proposed.

This algorithm contains the following four steps: response matrix calculation, establishment of intensity distribution equations, Zernike coefficients solution derived from the least squares method, and defocused image compensation with the solved Zernike coefficients.

The performance of the algorithm in a large obscuration ratio and fast focal ratio optical system on axis and the edge of the field of view (FOV) is examined. Two optical systems of the Hubble telescope and a modified Paul–Baker telescope are employed to test the algorithm.

The simulations show that the proposed algorithm outperforms in structural simplicity, and applications are expected in the wavefront recovery of the extreme environment (i.e., in space and the Antarctic).
KeywordActive Or Adaptive Optics Telescopes Aberrations (Global)
Subject Area天文技术与方法
Language英语
Document Type期刊论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/1344
Collection中国科学院南京天文光学技术研究所_期刊论文
望远镜新技术研究室_期刊论文
Affiliation1.南昌大学
2.南京天文光学技术研究所
3.中科院天文光学重点实验室
4.中国科学院大学
Recommended Citation
GB/T 7714
ZHIXU WU,HUA BAI,XIANGQUN CUI. Curvature wavefront sensing based on a single defocused image and intensity compensation[J]. Applied Optics,2016,55(10):2791-2799.
APA ZHIXU WU,HUA BAI,&XIANGQUN CUI.(2016).Curvature wavefront sensing based on a single defocused image and intensity compensation.Applied Optics,55(10),2791-2799.
MLA ZHIXU WU,et al."Curvature wavefront sensing based on a single defocused image and intensity compensation".Applied Optics 55.10(2016):2791-2799.
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