Magnetic fluid deformable mirror based wavefront sensorless adaptive optics systems

Yuanyuan Wang; Zhu Zhang; Dziki Mbemba; Zhizheng Wu

doi:10.1117/12.2501303

24 July 2018 Magnetic fluid deformable mirror based wavefront sensorless adaptive optics systems

Yuanyuan Wang, Zhu Zhang, Dziki Mbemba, Zhizheng Wu

Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 1082735 (2018) https://doi.org/10.1117/12.2501303
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China

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.

Citation Download Citation

Yuanyuan Wang, Zhu Zhang, Dziki Mbemba, and Zhizheng Wu "Magnetic fluid deformable mirror based wavefront sensorless adaptive optics systems", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 1082735 (24 July 2018); https://doi.org/10.1117/12.2501303

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