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Study of a MEMS-based Shack-Hartmann wavefront sensor with adjustable pupil sampling for astronomical adaptive optics

Baranec, Christoph and Dekany, Richard (2008) Study of a MEMS-based Shack-Hartmann wavefront sensor with adjustable pupil sampling for astronomical adaptive optics. Applied Optics, 47 (28). pp. 5155-5162. ISSN 0003-6935. https://resolver.caltech.edu/CaltechAUTHORS:BARao08

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Abstract

We introduce a Shack-Hartmann wavefront sensor for adaptive optics that enables dynamic control of the spatial sampling of an incoming wavefront using a segmented mirror microelectrical mechanical systems (MEMS) device. Unlike a conventional lenslet array, subapertures are defined by either segments or groups of segments of a mirror array, with the ability to change spatial pupil sampling arbitrarily by redefining the segment grouping. Control over the spatial sampling of the wavefront allows for the minimization of wavefront reconstruction error for different intensities of guide source and different atmospheric conditions, which in turn maximizes an adaptive optics system's delivered Strehl ratio. Requirements for the MEMS devices needed in this Shack-Hartmann wavefront sensor are also presented.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-28-5155PublisherArticle
ORCID:
AuthorORCID
Baranec, Christoph0000-0002-1917-9157
Additional Information:© 2008 Optical Society of America. Received 30 July 2008; accepted 2 September 2008; posted 5 September 2008 (Doc. ID 99583); published 25 September 2008. This work has been supported by the National Science Foundation (NSF) under grant AST-0619922.
Funders:
Funding AgencyGrant Number
NSFAST-0619922
Issue or Number:28
Record Number:CaltechAUTHORS:BARao08
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:BARao08
Official Citation:C. Baranec and R. Dekany, "Study of a MEMS-based Shack-Hartmann wavefront sensor with adjustable pupil sampling for astronomical adaptive optics," Appl. Opt. 47, 5155-5162 (2008) http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-28-5155
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12510
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:12 Dec 2008 00:35
Last Modified:03 Oct 2019 00:29

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