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

Micromachines

卷:8

Zhu Zhang¹  Junqiu Wu¹  Zhizheng Wu¹  Xianghui Kong¹  Tao Wang¹  Mei Liu¹ 

[1] Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, China;

关键词: magnetic fluid;    deformable mirror;    electromagnetic coil;    two-layer;    adaptive optics;   

DOI  :  10.3390/mi8030072

来源: DOAJ

【 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.

【 授权许可】

Unknown