Characterization of close-loop performance of double drive modes unimorph deformable mirror

Ying Liu; Jianqing Ma; Junjie Chen; Baoqing Li; Jiaru Chu

doi:10.1117/12.2054109

8 March 2014 Characterization of close-loop performance of double drive modes unimorph deformable mirror

Ying Liu, Jianqing Ma, Junjie Chen, Baoqing Li, Jiaru Chu

Proceedings Volume 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014; 90563N (2014) https://doi.org/10.1117/12.2054109
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Unimorph deformable mirrors are attractive in adaptive optics system due to their advantages of simplicity, compact, low cost and large stroke. In this paper, a double drive modes unimorph deformable mirror is discussed, which comprises a 100 μm thick PZT layer and a 200 μm thick silicon layer. This deformable mirror (DM) can achieve two different directions deformation of concave and convex driven by only positive voltage. The dual direction maximum defocus deformations are -14.3 μm and 14.9 μm. The close-loop performance of this DM is also tested in an experimental adaptive optics system based on Hartman-Shack wavefront sensor. In experiments, the DM is controlled by the steepest descent algorithm (SD) to corrected the aberrations in a close-loop manner. The ability of this DM of correction for the system aberration and reconstruction for the low order Zernike mode aberration is tested. The root mean square (rms) value of the system aberration after close-loop correction is about 28 nm. The reconstruction results for most low order Zernike mode aberrations have a relative error less than 10%.

Citation Download Citation

Ying Liu, Jianqing Ma, Junjie Chen, Baoqing Li, and Jiaru Chu "Characterization of close-loop performance of double drive modes unimorph deformable mirror", Proc. SPIE 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014, 90563N (8 March 2014); https://doi.org/10.1117/12.2054109

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available