High Closed Loop Correction Accuracy with a Liquid Crystal Wavefront Corrector
CAO Zhao-Liang1,2, MU Quan-Quan1,2, HU Li-Fa1, LIU Yong-Gang1, PENG Zeng-Hui1, XUAN Li1
1State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 1300332Graduate School of the Chinese Academy of Sciences, Beijing 100039
High Closed Loop Correction Accuracy with a Liquid Crystal Wavefront Corrector
CAO Zhao-Liang1,2;MU Quan-Quan1,2;HU Li-Fa1;LIU Yong-Gang1;PENG Zeng-Hui1;XUAN Li1
1State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 1300332Graduate School of the Chinese Academy of Sciences, Beijing 100039
摘要We investigate the accurate control of a liquid crystal wavefront corrector. First, the Gamma correction technique is adopted to amend the nonlinear phase modulation. Then, the control method and wavefront reconstruction are considered. Lastly, a closed loop correction experiment is carried out and a high correction accuracy is obtained with peak to valley (PV) of 0.08λ (λ=632.8nm), the wavefront phase rms 0.015λ, as well as the Strehl ratio of 0.99. The diffraction-limited resolution is achieved.
Abstract：We investigate the accurate control of a liquid crystal wavefront corrector. First, the Gamma correction technique is adopted to amend the nonlinear phase modulation. Then, the control method and wavefront reconstruction are considered. Lastly, a closed loop correction experiment is carried out and a high correction accuracy is obtained with peak to valley (PV) of 0.08λ (λ=632.8nm), the wavefront phase rms 0.015λ, as well as the Strehl ratio of 0.99. The diffraction-limited resolution is achieved.
CAO Zhao-Liang;MU Quan-Quan;HU Li-Fa;LIU Yong-Gang;PENG Zeng-Hui;XUAN Li. High Closed Loop Correction Accuracy with a Liquid Crystal Wavefront Corrector[J]. 中国物理快报, 2008, 25(3): 989-992.
CAO Zhao-Liang, MU Quan-Quan, HU Li-Fa, LIU Yong-Gang, PENG Zeng-Hui, XUAN Li. High Closed Loop Correction Accuracy with a Liquid Crystal Wavefront Corrector. Chin. Phys. Lett., 2008, 25(3): 989-992.
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2008, Vol. 25 
