Modeling and control of magnetic fluid deformable mirror with dual-layer actuators

Zhu Zhang; Yuanyuan Wang; Gunner Scott; Dziki Mbemba; Mei Liu; Zhizheng Wu

doi:10.1117/12.2501297

24 July 2018 Modeling and control of magnetic fluid deformable mirror with dual-layer actuators

Zhu Zhang, Yuanyuan Wang, Gunner Scott, Dziki Mbemba, Mei Liu, Zhizheng Wu

Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 1082734 (2018) https://doi.org/10.1117/12.2501297
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China

Abstract

In this paper, a rectangular magnetic fluid deformable mirror (MFDM) with dual-layer actuators is proposed, which is designed to improve the correction performance for full-order aberrations. The shape of the magnetic fluid surface is controlled by the combined magnetic field generated by a Maxwell coil and a two-layer array of miniature copper coils. Compared to conventional adaptive systems that use two mirrors, the proposed MFDM combines the two mirrors into one device. In order to evaluate the performance of MFDM on the correction of full-order aberrations, a decoupling control algorithm based on Zernike mode decomposition is adopted for the MFDM with dual-layer actuators. The experimental results based on a fabricated prototype MFDM show the effective correction performance of the mirror for the full-order aberrations.

Citation Download Citation

Zhu Zhang, Yuanyuan Wang, Gunner Scott, Dziki Mbemba, Mei Liu, and Zhizheng Wu "Modeling and control of magnetic fluid deformable mirror with dual-layer actuators", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 1082734 (24 July 2018); https://doi.org/10.1117/12.2501297

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