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- W1081905889 abstract "A hybrid phase retrieval (HPR) method using a combination of linear phase retrieval (LPR) and iterative phase retrieval (IPR) is proposed for real-time wavefront sensing. Only the intensity information of a single defocused image is required by HPR. Low-order aberrations are estimated by classical LPR algorithm but using a “segmented” detector to provide design flexibility and better sensing accuracy. High-order aberrations are estimated by a kind of modified Gerchberg-Saxton (MGS) algorithm which uses the LPR result as a prior knowledge to significantly speed the convergence. The performance of HPR is tested under various seeing conditions by simulation. For atmospheric aberrations with D/r0=3, HPR containing LPR and ten-iteration IPR can achieve an averaged Strehl ratio of 0.88." @default.
- W1081905889 created "2016-06-24" @default.
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- W1081905889 date "2015-08-05" @default.
- W1081905889 modified "2023-09-23" @default.
- W1081905889 title "Hybrid phase retrieval from a single defocused image" @default.
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- W1081905889 doi "https://doi.org/10.1117/12.2193567" @default.
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