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	High-accuracy wavefront sensing by phase diversity technique with bisymmetric defocuses diversity phase
	Zhang, P. G.; C. L. Yang; Z. H. Xu; Z. L. Cao; Q. Q. Mu and L. Xuan
刊名	Scientific Reports
	2017
卷号	7
英文摘要	We investigate a specific diversity phase for phase diversity (PD) phase retrieval, which possesses higher accuracy than common PD, especially for large-scale and high-frequency wavefront sensing. The commonly used PD algorithm employs the image intensities of the focused plane and one defocused plane to build the error metric. Unlike the commonly used PD, we explore a bisymmetric defocuses diversity phase, which employs the image intensities of two symmetrical defocused planes to build the error metric. This kind of diversity phase, named PD-BD (bisymmetric defocuses phase diversity), is analysed with the Cramer-Rao lower bound (CRLB). Statistically, PD-BD shows smaller CRLBs than the commonly used PD, which indicates stronger capacity of phase retrieval. Numerical simulations also verify that PD-BD has higher accuracy of phase retrieval than the commonly used PD when dealing with large-scale and high-frequency wavefront aberrations. To further affirm that PD-BD possesses higher accuracy of wavefront sensing than PD, we also perform a simple verification experiment.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/59446]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, P. G.,C. L. Yang,Z. H. Xu,et al. High-accuracy wavefront sensing by phase diversity technique with bisymmetric defocuses diversity phase[J]. Scientific Reports,2017,7.
APA	Zhang, P. G.,C. L. Yang,Z. H. Xu,Z. L. Cao,&Q. Q. Mu and L. Xuan.(2017).High-accuracy wavefront sensing by phase diversity technique with bisymmetric defocuses diversity phase.Scientific Reports,7.
MLA	Zhang, P. G.,et al."High-accuracy wavefront sensing by phase diversity technique with bisymmetric defocuses diversity phase".Scientific Reports 7(2017).

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