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Optical Engineering

Extended-range Shack-Hartmann wavefront sensor with nonlinear holographic lenslet array
Author(s): Dmytro Podanchuk; Volodymir P. Dan'ko; Myhailo Kotov; Jung-Young Son; Yong-Jin Choi
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Paper Abstract

A nonlinear holographic lenslet array is used to extend the angular dynamic range of a Shack-Hartmann wavefront sensor. The lenslet array has two focal distances defined by the first- and second-order diffracted beams. The second-order beam channel is used for preliminary estimation of the spot position in the first-order beam channel. The sensor has an angular dynamic range twice as large as that of a sensor with single-focus lenslets, while retaining the same accuracy.

Paper Details

Date Published: 1 May 2006
PDF: 5 pages
Opt. Eng. 45(5) 053605 doi: 10.1117/1.2202358
Published in: Optical Engineering Volume 45, Issue 5
Show Author Affiliations
Dmytro Podanchuk, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Volodymir P. Dan'ko, Kiev Univ. (Ukraine)
Myhailo Kotov, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Jung-Young Son, Hanyang Univ. (South Korea)
Yong-Jin Choi, Korea Institute of Science and Technology (South Korea)


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