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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 26 — Sep. 10, 2003
  • pp: 5284–5289

Practical Issues in Wave-Front Sensing by Use of Phase Diversity

Jean J. Dolne, Richard J. Tansey, Katherine A. Black, Jana H. Deville, Philip R. Cunningham, Kenneth C. Widen, and Paul S. Idell  »View Author Affiliations


Applied Optics, Vol. 42, Issue 26, pp. 5284-5289 (2003)
http://dx.doi.org/10.1364/AO.42.005284


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Abstract

We present the results of the phase-diversity algorithm applied to simulated and laboratory data. We show that the exact amount of defocus distance does not need to be known exactly for the phase-diversity algorithm on extended scene imaging. We determine, through computer simulation, the optimum diversity distance for various scene types. Using laboratory data, we compare the aberrations recovered with the phase-diversity algorithm and those measured with a Fizeau interferometer that uses a He-Ne laser. The two aberration sets agree with a Strehl ratio of over 0.9. The contrast of the recovered object is found to be ten times that of the raw image.

© 2003 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.0100) Image processing : Image processing
(100.1830) Image processing : Deconvolution
(100.3010) Image processing : Image reconstruction techniques
(100.3020) Image processing : Image reconstruction-restoration
(110.0110) Imaging systems : Imaging systems

Citation
Jean J. Dolne, Richard J. Tansey, Katherine A. Black, Jana H. Deville, Philip R. Cunningham, Kenneth C. Widen, and Paul S. Idell, "Practical Issues in Wave-Front Sensing by Use of Phase Diversity," Appl. Opt. 42, 5284-5289 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-26-5284


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