Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror

Hairen Wang; Ziguang Chen; Shengfeng Yang; Lin Hu; Ming Hu

doi:10.1117/1.JATIS.4.2.029001

10 May 2018 Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror

Hairen Wang, Ziguang Chen, Shengfeng Yang, Lin Hu, Ming Hu

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 4, Issue 2, 029001 (May 2018). https://doi.org/10.1117/1.JATIS.4.2.029001

Abstract

We introduce a discrete-layout bimorph disk elements piezoelectric deformable mirror (DBDEPDM), driven by the circular flexural-mode piezoelectric actuators. We formulated an electromechanical model for analyzing the performance of the new deformable mirror. As a numerical example, a 21-actuators DBDEPDM with an aperture of 165 mm was modeled. The presented results demonstrate that the DBDEPDM has a stroke larger than 10 μm and the resonance frequency is 4.456 kHz. Compared with the conventional piezoelectric deformable mirrors, the DBDEPDM has a larger stroke, higher resonance frequency, and provides higher spatial resolution due to the circular shape of its actuators. Moreover, numerical simulations of influence functions on the model are provided.

Citation Download Citation

Hairen Wang, Ziguang Chen, Shengfeng Yang, Lin Hu, and Ming Hu "Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror," Journal of Astronomical Telescopes, Instruments, and Systems 4(2), 029001 (10 May 2018). https://doi.org/10.1117/1.JATIS.4.2.029001

Received: 3 November 2017; Accepted: 23 April 2018; Published: 10 May 2018

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