1 May 2006 Extended-range Shack-Hartmann wavefront sensor with nonlinear holographic lenslet array
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Optical Engineering, 45(5), 053605 (2006). doi:10.1117/1.2202358
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.
Dmytro Podanchuk, Volodymir P. Dan'ko, Myhailo Kotov, Jung-Young Son, Yong-Jin Choi, "Extended-range Shack-Hartmann wavefront sensor with nonlinear holographic lenslet array," Optical Engineering 45(5), 053605 (1 May 2006). http://dx.doi.org/10.1117/1.2202358
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KEYWORDS
Wavefront sensors

Wavefronts

Holography

Sensors

Charge-coupled devices

Diffraction

Holograms

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