Volume 5 Issue 1
Feb.  2012
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CAO Zhao-liang, Li Xiao-ping, XUAN Li, MU Quan-quan, HU Li-fa, PENG Zeng-hui, LIU Yong-gang, YAO Li-shuang. Recent progress in liquid crystal adaptive optical techniques[J]. Chinese Optics, 2012, 5(1): 12-19. doi: 10.3788/CO.20120501.0012
Citation: CAO Zhao-liang, Li Xiao-ping, XUAN Li, MU Quan-quan, HU Li-fa, PENG Zeng-hui, LIU Yong-gang, YAO Li-shuang. Recent progress in liquid crystal adaptive optical techniques[J]. Chinese Optics, 2012, 5(1): 12-19. doi: 10.3788/CO.20120501.0012

Recent progress in liquid crystal adaptive optical techniques

  • Received Date: 19 Oct 2011
  • Rev Recd Date: 25 Oct 2011
  • Publish Date: 10 Feb 2012
  • Advances in Liquid Crystal Adaptive Optical Systems(LC AOS) are described for Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences(CIOMP, CAS) in this paper. For two bottlenecks of low energy utilization ratio and slow correction frequency in LC AOS problems, a series of effective methods are presented by the LC AOS working group. The low energy utilization ratio has been improved from 5% to 85%, which is similar to that of the deformable mirror based AOSs. Furthermore, the correction frequency of the LC AOS is also greatly improved from 5 Hz to 140 Hz, which is closed to the ability of correction for 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) are designed to correct the stars. Obtained results show that the resolution ability of the star for the 1.2 meter telescope is up to 3 times of the diffraction limitation.

     

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