Practical issues in wave-front sensing by use of phase diversity

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 di...

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Bibliographic Details
Published inApplied optics (2004) Vol. 42; no. 26; p. 5284
Main Authors Dolne, Jean J, Tansey, Richard J, Black, Katherine A, Deville, Jana H, Cunningham, Philip R, Widen, Kenneth C, Idell, Paul S
Format Journal Article
LanguageEnglish
Published United States 10.09.2003
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Summary: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.
ISSN:1559-128X
DOI:10.1364/AO.42.005284