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Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing

Haffert, Sebastiaan Y. and Keller, Christoph U. and Dekany, Richard (2020) Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing. In: Adaptive Optics Systems VII. Proceedings of SPIE. No.11448. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114481T. ISBN 9781510636835. https://resolver.caltech.edu/CaltechAUTHORS:20201217-100023057

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Abstract

Laser guide stars (LGS) are used in many adaptive optics systems to extend sky coverage. The most common wavefront sensor used in combination with a LGS is a Shack-Hartmann wavefront sensor (SHWFS). The ShackHartmann has a major disadvantage for extended source wavefront sensing because it directly samples the image. In this proceeding we propose to use the generalized-Optical Differentation Wavefront Sensor (g-ODWFS) a wavefront sensor for wavefront sensing of LGS. The g-ODWFS uses only 4 pixels per sub-aperture, has little to no aliasing noise and therefore no spurious low-order errors and has no need for centroid gain calibrations. In this proceeding we show the results of simulations that compare the g-ODWFS with the SHWFS.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2562610DOIArticle
ORCID:
AuthorORCID
Keller, Christoph U.0000-0002-1368-841X
Dekany, Richard0000-0002-5884-7867
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). Support for this work was provided by NASA through the NASA Hubble Fellowship grant #HST-HF2-51436.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.
Funders:
Funding AgencyGrant Number
NASA Hubble FellowshipHST-HF2-51436.001-A
NASANAS5-26555
Subject Keywords:Manuscript format, template, SPIE Proceedings, LaTeX
Series Name:Proceedings of SPIE
Issue or Number:11448
Record Number:CaltechAUTHORS:20201217-100023057
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20201217-100023057
Official Citation:Sebastiaan Y. Haffert, Christoph U. Keller, and Richard Dekany "Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing", Proc. SPIE 11448, Adaptive Optics Systems VII, 114481T (13 December 2020); https://doi.org/10.1117/12.2562610
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107147
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Dec 2020 19:40
Last Modified:17 Dec 2020 19:40

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