Improve the loop frequency of liquid crystal adaptive optics by concurrent control technique

	Improve the loop frequency of liquid crystal adaptive optics by concurrent control technique
其他题名	论文其他题名
	Cao Z. L.; Mu Q. Q.; Hu L. F.; Liu Y. G.; Xuan L.
	2010
发表期刊	Optics Communications
ISSN	0030-4018
卷号	283 期号:6 页码:946-950
摘要	A method to improve the loop frequency of liquid crystal adaptive optics systems (LC AOSs) was investigated. Based on open-loop control, a concurrent control scheme was proposed and the correction frequency of the LC AOS was increased from 85 Hz to 212 Hz. A simulated correction analysis illustrates that the distortion rejection ability of our LC AOS was improved with -1.1 dB by using the concurrent control technique. A 500 m horizontal turbulence correction experiment was done to validate our considerations. Firstly, 500 m horizontal turbulence was measured and its Greenwood frequency and atmospheric coherence length is 31.5 Hz and 4-5 cm, respectively. Then, 500 m horizontal turbulence was corrected in real time by using consecutive and concurrent control methods. The corrected results indicate that the resolution and contrast of the image was significantly improved by the concurrent control method. These results show that the concurrent control method can be used for LC AOSs to improve the correction frequency. (C) 2009 Elsevier B.V. All rights reserved.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26206
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Cao Z. L.,Mu Q. Q.,Hu L. F.,et al. Improve the loop frequency of liquid crystal adaptive optics by concurrent control technique[J]. Optics Communications,2010,283(6):946-950.
APA	Cao Z. L.,Mu Q. Q.,Hu L. F.,Liu Y. G.,&Xuan L..(2010).Improve the loop frequency of liquid crystal adaptive optics by concurrent control technique.Optics Communications,283(6),946-950.
MLA	Cao Z. L.,et al."Improve the loop frequency of liquid crystal adaptive optics by concurrent control technique".Optics Communications 283.6(2010):946-950.

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