Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing

In the traditional Shack–Hartmann wavefront sensing (SHWS) system, a lenslet array with a bigger configuration is desired to achieve a higher lateral resolution. However, practical implementation limits the configuration and this parameter is contradicted with the measurement range. We have proposed...

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Main Authors: Li, Xiang, Guo, Wenjiang, Zhao, Liping, Chen, I-Ming
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96032
http://hdl.handle.net/10220/10094
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-960322020-09-26T22:10:49Z Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing Li, Xiang Guo, Wenjiang Zhao, Liping Chen, I-Ming School of Mechanical and Aerospace Engineering A*STAR SIMTech In the traditional Shack–Hartmann wavefront sensing (SHWS) system, a lenslet array with a bigger configuration is desired to achieve a higher lateral resolution. However, practical implementation limits the configuration and this parameter is contradicted with the measurement range. We have proposed a digital scanning technique by making use of the high flexibility of a spatial light modulator to sample the reflected wavefront [LiX.ZhaoL. P.FangZ. P.TanC. S., “Improve lateral resolution in wavefront sensing with digital scanning technique,” in Asia-Pacific Conference of Transducers and Micro-Nano Technology (2006)]. The lenslet array pattern is programmed to laterally scan the whole aperture. In this paper, the methodology to optimize the scanning step for the purpose of form measurement is proposed. The correctness and effectiveness are demonstrated in numerical simulation and experimental investigation. Published version 2013-06-10T03:16:43Z 2019-12-06T19:24:43Z 2013-06-10T03:16:43Z 2019-12-06T19:24:43Z 2012 2012 Journal Article Guo, W., Zhao, L., Li, X., & Chen, I. M. (2012). Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing. Applied Optics, 51(1), 121-125. https://hdl.handle.net/10356/96032 http://hdl.handle.net/10220/10094 10.1364/AO.51.000121 en Applied optics © 2012 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/AO.51.000121].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
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language English
description In the traditional Shack–Hartmann wavefront sensing (SHWS) system, a lenslet array with a bigger configuration is desired to achieve a higher lateral resolution. However, practical implementation limits the configuration and this parameter is contradicted with the measurement range. We have proposed a digital scanning technique by making use of the high flexibility of a spatial light modulator to sample the reflected wavefront [LiX.ZhaoL. P.FangZ. P.TanC. S., “Improve lateral resolution in wavefront sensing with digital scanning technique,” in Asia-Pacific Conference of Transducers and Micro-Nano Technology (2006)]. The lenslet array pattern is programmed to laterally scan the whole aperture. In this paper, the methodology to optimize the scanning step for the purpose of form measurement is proposed. The correctness and effectiveness are demonstrated in numerical simulation and experimental investigation.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Li, Xiang
Guo, Wenjiang
Zhao, Liping
Chen, I-Ming
format Article
author Li, Xiang
Guo, Wenjiang
Zhao, Liping
Chen, I-Ming
spellingShingle Li, Xiang
Guo, Wenjiang
Zhao, Liping
Chen, I-Ming
Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
author_sort Li, Xiang
title Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
title_short Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
title_full Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
title_fullStr Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
title_full_unstemmed Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing
title_sort optimization of scanning strategy of digital shack–hartmann wavefront sensing
publishDate 2013
url https://hdl.handle.net/10356/96032
http://hdl.handle.net/10220/10094
_version_ 1681057759856951296