Applications of liquid crystal adaptive optics for larger aperture telescope

Zhao-liang Cao; Li Xuan; Quan-quan Mu; Li-fa Hu; Zeng-hui Peng; Yong-gang Liu; Li-shuang Yao

doi:10.1117/12.963470

15 October 2012 Applications of liquid crystal adaptive optics for larger aperture telescope

Zhao-liang Cao, Li Xuan, Quan-quan Mu, Li-fa Hu, Zeng-hui Peng, Yong-gang Liu, Li-shuang Yao

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 841513 (2012) https://doi.org/10.1117/12.963470
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

In this paper, the advances in liquid crystal adaptive optics system (LC AOS) are presented for Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (CIOMP, CAS). The LC AOS has two bottlenecks of low energy utilization ratio and slow correction frequency. To solve these problems, a series of effective methods were utilized by the LC AOS working group. The problem of energy utilization ratio was solved and the energy utilization ratio was improved from 5% to 85%, which was similar to the deformable mirror based AOSs. Furthermore, the correction frequency of the LC AOS was also greatly improved from 5Hz to 140Hz, which is closed to the ability of correction the atmospheric turbulence. According to these research results, two LC AOSs, which correspond to a 2.16 meter Telescope (located at Xinglong Station of Beijing Astronomical Observatory) and a 1.2 meter telescope (located at CIOMP, CAS), were designed and fabricated. By using these LC AOSs, the star was observed with adaptive correction and the correction is effective. At last, the resolution ability of the star is up to 1.7 times of the diffraction limitation for the 1.2 meter telescope.

Citation Download Citation

Zhao-liang Cao, Li Xuan, Quan-quan Mu, Li-fa Hu, Zeng-hui Peng, Yong-gang Liu, and Li-shuang Yao "Applications of liquid crystal adaptive optics for larger aperture telescope", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 841513 (15 October 2012); https://doi.org/10.1117/12.963470

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