New technique for wave-front reconstruction in optical telescopes.

Details New technique for wave-front reconstruction in optical telescopes. New technique for wave-front reconstruction in optical telescopes.

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997josaa..14.3394b&link_type=abstract

Journal of the Optical Society of America A, Vol. 14, No. 12, p. 3394 - 3401

Physics

Optics

2

Adaptive Optics: Image Reconstruction

Scientific paper

A new approach to wave-front sensing for adaptive optics systems is presented. The method, which explicitly accounts for measurement errors, is based on a phase-retrieval algorithm whose performance with respect to trapping and stagnation problems is improved by use of a suitable mathematical formulation. The algorithm allows the determination of the expansion coefficients of the wave front in terms of Zernike polynomials. A numerical analysis shows the effectiveness of the algorithm even when the maximum optical path disturbance value is greater than two wavelengths and the measurement error is quite relevant.

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