Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller

doi:10.1364/oe.27.011651

CIOMP OpenIR

	Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller
	X.Y.Zhang; Z.L.Cao; C.L.Yang; Z.H.Peng; Q.Q.Mu; L.Xuan
	2019
发表期刊	Optics Express
ISSN	1094-4087
卷号	27 期号:8 页码:11651-11660
摘要	Open loop liquid crystal adaptive optics (LC AO) has overcome the disadvantage of low energy efficiency after years of research, and its use is very promising in ground-based large aperture telescopes for visible band imaging. However, the low system bandwidth of open loop LC AO still limits its application. In order to solve this problem, we bring the concept of proportional-derivative control (which is widely used in closed loop systems) into open loop LC AO in this paper. Experiment results verified that the system -3 dB rejection bandwidth could improve from 75 Hz to 112 Hz when tip-tilt aberration is introduced, and the mean relative contrast ratio of imaging results could improve 80% when high-order aberrations are introduced. The proposed control method has significant meaning in promoting the application of open loop LC AO in ground-based large aperture telescopes for visible imaging. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
关键词	phase modulator,Optics
DOI	10.1364/oe.27.011651
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62778
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X.Y.Zhang,Z.L.Cao,C.L.Yang,et al. Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller[J]. Optics Express,2019,27(8):11651-11660.
APA	X.Y.Zhang,Z.L.Cao,C.L.Yang,Z.H.Peng,Q.Q.Mu,&L.Xuan.(2019).Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller.Optics Express,27(8),11651-11660.
MLA	X.Y.Zhang,et al."Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller".Optics Express 27.8(2019):11651-11660.

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