Radial sub-aperture coherence method to achieve beam steering with high precision and stability

doi:10.1364/oe.27.006331

CIOMP OpenIR

	Radial sub-aperture coherence method to achieve beam steering with high precision and stability
	C.Wang; Z.Peng; Y.Liu; S.Li; Z.Zhao; W.Chan; Q.Wang; Q.Mu
	2019
发表期刊	Optics Express
ISSN	1094-4087
卷号	27 期号:5 页码:6331-6347
摘要	Sub-aperture coherence (SAC) algorithm, which is based on the classical phase modulation method called variable period grating (VPG), was usually used to control liquid crystal optical phased arrays (LCOPA) to achieve agile beam steering with high precision. However, the beam steering angle of SAC is severely affected by the beam aperture, which limits the generality of the algorithm distinctly. In this article, two kinds of new phase modulation method have been proposed to solve this problem, which were named as radial sub-aperture coherence (RSAC) and symmetrical radial sub-aperture coherence (SRSAC). By using RSAC, the holistic drift of steering angle, which is caused by the variation of beam aperture, can be effectively avoided. In addition, a series of equidistant steering points with ultra-high precision can be obtained. Upon this basis, SRSAC greatly enhances the steering angle's stability in the presence of system alignment error and relative vibration. Thus, the practicability of LCOPA for beam steering can be improved effectively. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
关键词	nematic liquid-crystal,optical phased-array,Optics
DOI	10.1364/oe.27.006331
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/181722/63027
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	C.Wang,Z.Peng,Y.Liu,et al. Radial sub-aperture coherence method to achieve beam steering with high precision and stability[J]. Optics Express,2019,27(5):6331-6347.
APA	C.Wang.,Z.Peng.,Y.Liu.,S.Li.,Z.Zhao.,...&Q.Mu.(2019).Radial sub-aperture coherence method to achieve beam steering with high precision and stability.Optics Express,27(5),6331-6347.
MLA	C.Wang,et al."Radial sub-aperture coherence method to achieve beam steering with high precision and stability".Optics Express 27.5(2019):6331-6347.

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