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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 1 — Jan. 3, 2011
  • pp: 371–379

Wavefront sensorless adaptive optics: a general model-based approach

Huang Linhai and Changhui Rao  »View Author Affiliations

Optics Express, Vol. 19, Issue 1, pp. 371-379 (2011)

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Wavefront sensorless adaptive optics (AO) systems have been widely studied in recent years. To reach optimum results, such systems require an efficient correction method. In this paper, a general model-based correction method for a wavefront sensorless AO system is presented. The general model-based approach is set up based on a relationship wherein the second moments (SM) of the wavefront gradients are approximately proportionate to the FWHM of the far-field intensity distribution. The general model-based method is capable of taking various common sets of functions as predetermined bias functions and correcting the aberrations by using fewer photodetector measurements. Numerical simulations of AO corrections of various random aberrations are performed. The results show that the Strehl ratio is improved from 0.07 to about 0.90, with only N + 1 photodetector measurement for the AO correction system using N aberration modes as the predetermined bias functions.

© 2010 OSA

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: August 17, 2010
Revised Manuscript: October 11, 2010
Manuscript Accepted: November 24, 2010
Published: December 24, 2010

Huang Linhai and Changhui Rao, "Wavefront sensorless adaptive optics: a general model-based approach," Opt. Express 19, 371-379 (2011)

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