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Micromachines 2017, 8(3), 72; doi:10.3390/mi8030072

Magnetic Fluid Deformable Mirror with a Two-Layer Layout of Actuators †

Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, China
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Author to whom correspondence should be addressed.
Academic Editors: Wei Wang and Franck Chollet
Received: 3 January 2017 / Revised: 20 February 2017 / Accepted: 24 February 2017 / Published: 2 March 2017
(This article belongs to the Special Issue Optofluidics 2016)
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Abstract

In this paper, a new type of magnetic fluid deformable mirror (MFDM) with a two-layer layout of actuators is proposed to improve the correction performance for full-order aberrations with a high spatial resolution. The shape of the magnetic fluid surface is controlled by the combined magnetic field generated by the Maxwell coil and the two-layer array of miniature coils. The upper-layer actuators which have a small size and high density are used to compensate for small-amplitude high-order aberrations and the lower-layer actuators which have a big size and low density are used to correct large-amplitude low-order aberrations. The analytical model of this deformable mirror is established and the aberration correction performance is verified by the experimental results. As a new kind of wavefront corrector, the MFDM has major advantages such as large stroke, low cost, and easy scalability and fabrication. View Full-Text
Keywords: magnetic fluid; deformable mirror; electromagnetic coil; two-layer; adaptive optics magnetic fluid; deformable mirror; electromagnetic coil; two-layer; adaptive optics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wu, Z.; Kong, X.; Zhang, Z.; Wu, J.; Wang, T.; Liu, M. Magnetic Fluid Deformable Mirror with a Two-Layer Layout of Actuators †. Micromachines 2017, 8, 72.

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