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Proceedings Paper

Magnetic fluid deformable mirror based wavefront sensorless adaptive optics systems
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Paper Abstract

Magnetic fluid deformable mirror (MFDM) is a new type of wavefront corrector that features large deformation strokes, smooth continuous mirror surface, low manufacturing cost, and easy scalability. Considering the idea of taking full advantages of the MFDM’s stroke strengths and the limitations of the adaptive optics (AO) system with the wavefront sensor, this paper proposes a MFDM based wavefront sensorless adaptive optics system. In order to make the MFDM produce desired deformation to eliminate unknown aberrations, this paper introduces the stochastic parallel gradient descent (SPGD) algorithm in the control system. Experimental results show that this SPGD algorithm can effectively control the MFDM to compensate for the unknown aberration in a parallel laser beam so that a perfect focused spot is produced on the CCD image.

Paper Details

Date Published: 24 July 2018
PDF: 7 pages
Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 1082735 (24 July 2018); doi: 10.1117/12.2501303
Show Author Affiliations
Yuanyuan Wang, Shanghai Univ. (China)
Zhu Zhang, Shanghai Univ. (China)
Dziki Mbemba, Shanghai Univ. (China)
Zhizheng Wu, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 10827:
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
Yingjie Yu; Chao Zuo; Kemao Qian, Editor(s)

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