Study on the effect of laser irradiation on high-order aberrations of deformable mirror by FEM

Yao-ping Zhang; Hong Zhou; Guo-yun Long; Jun-qi Fan; Hao Cui

doi:10.1117/12.2504765

11 January 2019 Study on the effect of laser irradiation on high-order aberrations of deformable mirror by FEM

Yao-ping Zhang, Hong Zhou, Guo-yun Long, Jun-qi Fan, Hao Cui

Proceedings Volume 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 1083707 (2019) https://doi.org/10.1117/12.2504765
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

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.

Citation Download Citation

Yao-ping Zhang, Hong Zhou, Guo-yun Long, Jun-qi Fan, and Hao Cui "Study on the effect of laser irradiation on high-order aberrations of deformable mirror by FEM", Proc. SPIE 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 1083707 (11 January 2019); https://doi.org/10.1117/12.2504765

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KEYWORDS

Mirrors

Deformable mirrors

Laser irradiation

Finite element methods

Photovoltaics

Actuators

Adaptive optics

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