Eliminating hysteresis of piezoelectric deformable mirror by charge control

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 2015 English Publisher:Elsevier BVJournal:Optics Communications, volume 349, pages 1-5 (issn: 0030-4018,

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Authors: Jianqiang Ma; Junjie Chen; Yanlei Hu; Lei Tian; Baoqing Li; Jiaru Chu;

doi: 10.1016/j.optcom.2015.03.037

Eliminating hysteresis of piezoelectric deformable mirror by charge control

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Abstract

Inherent hysteresis of piezoelectric deformable mirror (DM) limits the performance of adaptive optics (AO) systems including bandwidth and residual wavefront error. A charge control method based on switched capacitor charge pump was proposed to eliminate the hysteresis of piezoelectric DM. Experimental results show that the hysteresis of a unimorph DM was reduced from 11% to less than 1%. It indicates that the proposed charge control method has the potential to improve the deformation precision for one step correction as well as the bandwidth of the AO systems.

Related Organizations

University of Science and Technology of China
China (People's Republic of)
Ningbo University
China (People's Republic of)

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