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

機譯:具有執(zhí)行器兩層布局的電磁流體可變形鏡

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摘要

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.
機譯:本文提出了一種新型的具有兩層致動器布局的磁流體可變形鏡(MFDM),以提高具有高空間分辨率的全像差的校正性能。磁流體表面的形狀由麥克斯韋線圈和微型線圈的兩層陣列產(chǎn)生的組合磁場控制。具有小尺寸和高密度的上層致動器用于補償小振幅高階像差,具有大尺寸和低密度的下層致動器用于校正大振幅低階像差。建立了該變形鏡的解析模型,并通過實驗結(jié)果驗證了像差校正性能。作為一種新型的波前校正器,MFDM具有較大的優(yōu)勢,例如行程大,成本低,易于擴展和制造。

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