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Proceedings Paper

Differential sensing technique for correlation-based adaptive optics
Author(s): Hayao Kikuchi; Yusuke Honma; Noriaki Miura; Takatoshi Shibuya; Yosuke Tamada; Atsushi Matsuda; Masayuki Hattori
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Paper Abstract

We have developed a microscopic adaptive optics (AO) system that corrects wavefront phase errors induced by complex structures of biological samples. The technique of correlation-based Shack-Hartmann (SH) sensing used in the AO system enables wavefront measurement using complex structures in a target as the reference. However, sub-images in the SH sensor become deformed dependently on the positions of sub-apertures as the NA of the microscopic objective is higher. This often deteriorates the accuracy of wavefront sensing. To mitigate the undesirable effect, we here propose a differential wavefront sensing technique with a mathematical formula, which is expected to measure wavefront at a better precision. Because differences in image shapes are less significant between nearby SAs, correlations between adjacent SAs are measured in the proposed method. We confirmed that the AO system worked as designed by experiments.

Paper Details

Date Published: 17 February 2020
PDF: 5 pages
Proc. SPIE 11248, Adaptive Optics and Wavefront Control for Biological Systems VI, 1124811 (17 February 2020); doi: 10.1117/12.2545717
Show Author Affiliations
Hayao Kikuchi, Kitami Institute of Technology (Japan)
Yusuke Honma, Kitami Institute of Technology (Japan)
Noriaki Miura, Kitami Institute of Technology (Japan)
Takatoshi Shibuya, Kitami Institute of Technology (Japan)
Yosuke Tamada, Utsunomiya Univ. (Japan)
Atsushi Matsuda, National Institute of Information and Communications Technology (Japan)
Masayuki Hattori, National Astronomical Observatory of Japan (Japan)

Published in SPIE Proceedings Vol. 11248:
Adaptive Optics and Wavefront Control for Biological Systems VI
Thomas G. Bifano; Sylvain Gigan; Na Ji, Editor(s)

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