Changchun Institute of Optics,Fine Mechanics and Physics,CAS
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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