@inproceedings{5b8b47a5f75340e9a02088243ba58e17,
title = "Hybrid phase retrieval from a single defocused image",
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.",
keywords = "Gerchberg-Saxton, Hybrid phase retrieval, Iterative phase retrieval, Linear phase retrieval, Wavefront sensing",
author = "Bing Dong and Genglei Jia and Rui Wang",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; 2015 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology, OIT 2015 ; Conference date: 17-05-2015 Through 19-05-2015",
year = "2015",
doi = "10.1117/12.2193567",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Guangming Shi and Bormin Huang and Xuelong Li",
booktitle = "2015 International Conference on Optical Instruments and Technology",
address = "United States",
}