A miniature curvature wavefront sensor with coherent fiber image bundle

Jessica Zheng, Samuel Richards, Michael Goodwin, Jon Lawrence, Sergio Leon-Saval, Alexander Argyros

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

5 Citations (Scopus)

Abstract

A miniature curvature wavefront sensor with a coherent fiber image bundle is proposed in which a miniature lateral displacement beamsplitter is designed to obtain the intra- and extra- focus images from a telescope simultaneously at its exit. The two images are received and relayed by two coherent fiber image bundles. The relayed images are then re-imaged to one camera and processed to obtain the input wavefront at telescope pupil. The whole device is quite compact and can be driven by a "Starbug" fiber positioning device currently under development within the Australian Astronomical Observatory. In this paper, the performance of the proposed sensor is investigated in details by applying a simulated atmospheric turbulence at the telescope pupil plane. We study the offset distance of two image measurement planes, fiber core size, fiber fill factor and the magnitude of natural guide star effects to its performance. This study provides guidance to the sensor design.

Original languageEnglish
Title of host publicationAdaptive Optics Systems IV
EditorsEnrico Marchetti, Laird M. Close, Jean-Pierre Véran
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-9
Number of pages9
ISBN (Electronic)9780819496164
DOIs
Publication statusPublished - 2014
EventAdaptive Optics Systems IV - Montreal, Canada
Duration: 22 Jun 201427 Jun 2014

Publication series

NameProceedings of SPIE
Volume9148
ISSN (Print)0277-786X

Other

OtherAdaptive Optics Systems IV
CountryCanada
CityMontreal
Period22/06/1427/06/14

Keywords

  • coherent fiber image bundle
  • Curvature wavefront sensor
  • lateral displacement beamsplitter

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