Optimal energy-splitting method for an open-loop liquid crystal adaptive optics system

	Optimal energy-splitting method for an open-loop liquid crystal adaptive optics system
	Cao Z. L.; Mu Q. Q.; Hu L. F.; Liu Y. G.; Peng Z. H.; Yang Q. Y.; Meng H. R.; Yao L. S.; Xuan L.
	2012
发表期刊	Optics Express
ISSN	1094-4087
卷号	20 期号:17 页码:19331-19342
摘要	A waveband-splitting method is proposed for open-loop liquid crystal adaptive optics systems (LC AOSs). The proposed method extends the working waveband, splits energy flexibly, and improves detection capability. Simulated analysis is performed for a waveband in the range of 350 nm to 950 nm. The results show that the optimal energy split is 7: 3 for the wavefront sensor (WFS) and for the imaging camera with the waveband split into 350 nm to 700 nm and 700 nm to 950 nm, respectively. A validation experiment is conducted by measuring the signal-to-noise ratio (SNR) of the WFS and the imaging camera. The results indicate that for the waveband-splitting method, the SNR of WFS is approximately equal to that of the imaging camera with a variation in the intensity. On the other hand, the SNR of the WFS is significantly different from that of the imaging camera for the polarized beam splitter energy splitting scheme. Therefore, the waveband-splitting method is more suitable for an open-loop LC AOS. An adaptive correction experiment is also performed on a 1.2-meter telescope. A star with a visual magnitude of 4.45 is observed and corrected and an angular resolution ability of 0.31 '' is achieved. A double star with a combined visual magnitude of 4.3 is observed as well, and its two components are resolved after correction. The results indicate that the proposed method can significantly improve the detection capability of an open-loop LC AOS. (C) 2012 Optical Society of America
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34116
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. Optimal energy-splitting method for an open-loop liquid crystal adaptive optics system[J]. Optics Express,2012,20(17):19331-19342.
APA	Cao Z. L..,Mu Q. Q..,Hu L. F..,Liu Y. G..,Peng Z. H..,...&Xuan L..(2012).Optimal energy-splitting method for an open-loop liquid crystal adaptive optics system.Optics Express,20(17),19331-19342.
MLA	Cao Z. L.,et al."Optimal energy-splitting method for an open-loop liquid crystal adaptive optics system".Optics Express 20.17(2012):19331-19342.