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Closed-loop aberration correction by use of a modal Zernike wave-front sensor

Neil, M. A. A., Booth, M. J., Wilson, T.·2000·Optics Letters
DOI 10.1364/ol.25.001083
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Abstract

We describe the practical implementation of a closed-loop adaptive-optics system incorporating a novel modal wave-front sensor. The sensor consists of a static binary-phase computer-generated holographic element, which generates a pattern of spots in a detector plane. Intensity differences between symmetric pairs of these spots give a direct measure of the Zernike mode amplitudes that are present in the input wave front. We use a ferroelectric liquid-crystal spatial light modulator in conjunction with a 4-f system and a spatial filter as a wave-front correction element. We present results showing a rapid increase in Strehl ratio and focal spot quality as the system corrects for deliberately introduced aberrations.

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Research works printed but not linked: 4

  1. Neil, 2000, J. Opt. Soc. Am. A, 17, 1098, 10.1364/JOSAA.17.001098 · DOI
  2. Mahajan, 1994, Appl. Opt., 5, 8121, 10.1364/AO.33.008121 · DOI
  3. Neil, 1998, Opt. Lett., 23, 1849, 10.1364/OL.23.001849 · DOI
  4. Neil, 2000, J. Microsc. (Oxford), 197, 219, 10.1046/j.1365-2818.2000.00680.x · DOI

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Metadata

Authors
Neil, M. A. A., Booth, M. J., & Wilson, T.
Venue
Optics Letters
Publisher
Optica Publishing Group
Published
2000-08-01
Volume
25
Issue
15
Pages
1083
ISSN
  • 0146-9592
  • 1539-4794
DOI
10.1364/ol.25.001083
Cited by
93
References
0
Language
en
Licence

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