Correction of horizontal turbulence with nematic liquid crystal wavefront corrector

	Correction of horizontal turbulence with nematic liquid crystal wavefront corrector
其他题名	论文其他题名
	Cao Z. L.; Mu Q. Q.; Hu L. F.; Li D. Y.; Liu Y. G.; Jin L.; Xuan L.
	2008
发表期刊	Optics Express
ISSN	1094-4087
卷号	16 期号:10 页码:7006-7013
摘要	To correct horizontal turbulences, a nematic liquid crystal wavefront corrector (NLC WFC) with a fast response is used. It can linearly modulate 2 pi radian at a wavelength of 633 nm. The closed-loop frequency of the adaptive optics system was originally only 12 Hz. Hence, a control system using the NLC WFC was developed, graphic processing units (GPUs) were used to compute the compensated wavefront, and the driving software for the NLC WFC was optimized. With these improvements, the closed loop frequency increased up to 60 Hz. Finally, the correction of a 500-m horizontal turbulence was performed with this fast adaptive system. After the correction, the averaged peak-to-valley (PV) and root-mean-square (RMS) values of the wavefront were reduced to 0.2 lambda. and 0.06 lambda, respectively. The core of a fiber bundle is also resolved with a field angle of 0.68 ''. As the limit of the angular resolution of the telescope is 0.65 '', the quasi-diffraction limited image is acquired with the closed-loop correction. It is shown that the NLC WFC has the ability to correct weak turbulences. (C) 2008 Optical Society of America.
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/181722/26388
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. Correction of horizontal turbulence with nematic liquid crystal wavefront corrector[J]. Optics Express,2008,16(10):7006-7013.
APA	Cao Z. L..,Mu Q. Q..,Hu L. F..,Li D. Y..,Liu Y. G..,...&Xuan L..(2008).Correction of horizontal turbulence with nematic liquid crystal wavefront corrector.Optics Express,16(10),7006-7013.
MLA	Cao Z. L.,et al."Correction of horizontal turbulence with nematic liquid crystal wavefront corrector".Optics Express 16.10(2008):7006-7013.

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