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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 15 — Aug. 1, 2000
  • pp: 1083–1085

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

M. A. A. Neil, M. J. Booth, and T. Wilson  »View Author Affiliations


Optics Letters, Vol. 25, Issue 15, pp. 1083-1085 (2000)
http://dx.doi.org/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.

© 2000 Optical Society of America

OCIS Codes
(090.1000) Holography : Aberration compensation

Citation
M. A. A. Neil, M. J. Booth, and T. Wilson, "Closed-loop aberration correction by use of a modal Zernike wave-front sensor," Opt. Lett. 25, 1083-1085 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-15-1083

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