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Proceedings Paper

Adaptive optics system with a hierarchical algorithm for measuring and correcting wavefront distortions
Author(s): Seung-Kyu Park; Sun Woong Ra; Sung-Hoon Baik; Min-Suk Kim; Chang-Hwan Lim; Byung-Heon Cha
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Paper Abstract

A robust measuring technique for the wavefront is one of the key parts for a stable adaptive optics system in the practical fields. Also, the measurement resolution of the wavefront is important for improving the performance of an adaptive optics system. In this paper, we propose a robust measuring technique for the wavefront using a Shack-Hartmann wavefront sensor for an adaptive optics system. The proposed measuring technique for the wavefront uses an iterative center of mass algorithm with the hierarchical sizes of a searching window and the hierarchical threshold values. The measurement accuracy and stability are investigated using the proposed hierarchical algorithm and compared with the conventional algorithm of the wavefront in the experiments. Also, we describe the hardware configuration of the adatptive optics system operating in our laboratory.

Paper Details

Date Published: 23 December 2004
PDF: 9 pages
Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); doi: 10.1117/12.571755
Show Author Affiliations
Seung-Kyu Park, Korea Atomic Energy Research Institute (South Korea)
Sun Woong Ra, Chungnam National Univ. (South Korea)
Sung-Hoon Baik, Korea Atomic Energy Research Institute (South Korea)
Min-Suk Kim, Korea Atomic Energy Research Institute (South Korea)
Chang-Hwan Lim, Korea Atomic Energy Research Institute (South Korea)
Byung-Heon Cha, Korea Atomic Energy Research Institute (South Korea)


Published in SPIE Proceedings Vol. 5639:
Adaptive Optics and Applications III
Wenhan Jiang; Yoshiji Suzuki, Editor(s)

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