Wavefront reconstruction of Shack-Hartmann data for a high-resolution pixelated wavefront corrector

Jungtae Rha; Michael K. Giles

doi:10.1117/12.507631

11 December 2003 Wavefront reconstruction of Shack-Hartmann data for a high-resolution pixelated wavefront corrector

Jungtae Rha, Michael K. Giles

Proceedings Volume 5162, Advanced Wavefront Control: Methods, Devices, and Applications; (2003) https://doi.org/10.1117/12.507631
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

The subapertures defined by a Shack-Hartmann wave front sensor are highly oversampled when a high-resolution pixelated liquid crystal device (LCD) is used for wave front correction. Wave front reconstruction requires that appropriate phase values be assigned to all LCD pixels within each oversampled subaperture. We have implemented a reconstructor that uses a least squares approximation to calculate the phase values for the subaperture corners based on the Shack-Hartmann data. It then uses a zonal fitting interpolation method to assign phase values to the rest of the LCD pixels without creating discontinuities between the subaperture regions. Experimental results are presented.

Citation Download Citation

Jungtae Rha and Michael K. Giles "Wavefront reconstruction of Shack-Hartmann data for a high-resolution pixelated wavefront corrector", Proc. SPIE 5162, Advanced Wavefront Control: Methods, Devices, and Applications, (11 December 2003); https://doi.org/10.1117/12.507631

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