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Proceedings Paper

Applications of liquid crystal adaptive optics for larger aperture telescope
Author(s): Zhao-liang Cao; Li Xuan; Quan-quan Mu; Li-fa Hu; Zeng-hui Peng; Yong-gang Liu; Li-shuang Yao
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Paper 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.

Paper Details

Date Published: 15 October 2012
PDF: 8 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 841513 (15 October 2012); doi: 10.1117/12.963470
Show Author Affiliations
Zhao-liang Cao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Li Xuan, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Quan-quan Mu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Li-fa Hu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Zeng-hui Peng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yong-gang Liu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Li-shuang Yao, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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