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Study on the effect of laser irradiation on high-order aberrations of deformable mirror by FEM
Author(s): Yao-ping Zhang; Hong Zhou; Guo-yun Long; Jun-qi Fan; Hao Cui
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Paper Abstract

In order to analyze the influence of laser irradiation on high-order aberrations of the deformed mirror, the finite element model of a 37-element deformable mirror was built. The deformation and high-order aberrations were calculated after applying the laser irradiation to the mirror. Based on the results, we found the high-order aberrations became larger and larger while the thickness of the mirror decreasing. The high-order aberration presented a honeycomb shape of the piezoelectric actuator when the mirror thickness is 1 mm. The PV decreased from 0.128 μm to 0.104 μm when the mirror got thicker from 1 mm to 3 mm, and the corresponding removed low-order Zernike coefficient residual error was reduced from 0.107 μm to 0.0504 μm. The high-order aberrations of the deformed mirror were very little when the mirror surface thickness was 3 mm. The results have practical engineering application for the design of deformable mirrors in future laser systems.

Paper Details

Date Published: 11 January 2019
PDF: 7 pages
Proc. SPIE 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 1083707 (11 January 2019); doi: 10.1117/12.2504765
Show Author Affiliations
Yao-ping Zhang, Institute of Optics and Electronics (China)
Hong Zhou, Institute of Optics and Electronics (China)
Guo-yun Long, Institute of Optics and Electronics (China)
Jun-qi Fan, Institute of Optics and Electronics (China)
Hao Cui, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 10837:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Xiaoliang Ma; Bin Fan; Yongjian Wan; Adrian Russell; Xiangang Luo, Editor(s)

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