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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 1 — Jan. 1, 2000
  • pp: 94–103

Calibration of a deformable mirror and Strehl ratio measurements by use of phase diversity

Mats G. Löfdahl, Göran B. Scharmer, and Wang Wei  »View Author Affiliations


Applied Optics, Vol. 39, Issue 1, pp. 94-103 (2000)
http://dx.doi.org/10.1364/AO.39.000094


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Abstract

Calibration experiments with a bimorph mirror are presented. Phase-diversity wave-front sensing is used for measuring the control matrix, nulling wave-front errors in the optical setup, including the mirror, and measuring Strehl ratios and residual higher-order aberrations. The Strehl ratio of the calibrated system is measured to be 0.975, corresponding to 1/40 wave rms in the residual wave front. The conclusion is that a phase-diversity wave-front sensor is easier to install and use than interferometers and can replace them in optical setups for testing adaptive optics systems.

© 2000 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(110.3000) Imaging systems : Image quality assessment
(110.6770) Imaging systems : Telescopes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure

History
Original Manuscript: July 27, 1999
Revised Manuscript: October 18, 1999
Published: January 1, 2000

Citation
Mats G. Löfdahl, Göran B. Scharmer, and Wang Wei, "Calibration of a deformable mirror and Strehl ratio measurements by use of phase diversity," Appl. Opt. 39, 94-103 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-1-94

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