Near-field collimation of light carrying orbital angular momentum with bull's-eye-assisted plasmonic coaxial waveguides

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	Near-field collimation of light carrying orbital angular momentum with bull's-eye-assisted plasmonic coaxial waveguides
	Pu, Mingbo; Ma, Xiaoliang; Zhao, Zeyu; Li, Xiong; Wang, Yanqin; Gao, Hui; Hu, Chenggang; Gao, Ping; Wang, Changtao; Luo, Xiangang
刊名	SCIENTIFIC REPORTS
	2015-07-10
卷号	5
英文摘要	The orbital angular momentum (OAM) of light, as an emerging hotspot in optics and photonics, introduces many degrees of freedom for applications ranging from optical communication and quantum processing to micromanipulation. To achieve a high degree of integration, optical circuits for OAM light are essential, which are, however, challenging in the optical regime owing to the lack of well-developed theory. Here we provide a scheme to guide and collimate the OAM beam at the micro-and nano-levels. The coaxial plasmonic slit was exploited as a naturally occurring waveguide for light carrying OAM. Concentric grooves etched on the output surface of the coaxial waveguide were utilized as a plasmonic metasurface to couple the OAM beam to free space with greatly increased beam directivity. Experimental results at lambda = 532 nm validated the novel transportation and collimating effect of the OAM beam. Furthermore, dynamic tuning of the topological charges was demonstrated by using a liquid crystal spatial light modulator (SLM).
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	OPTICAL VORTEX ; POLARIZED-LIGHT ; APERTURE ; INTERFERENCE ; SURFACE ; MODE ; LENS
收录类别	SCI
语种	英语
WOS记录号	WOS:000357717300001
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/3666]
专题	光电技术研究所_光电技术研究所被WoS收录文章
作者单位	Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China
推荐引用方式 GB/T 7714	Pu, Mingbo,Ma, Xiaoliang,Zhao, Zeyu,et al. Near-field collimation of light carrying orbital angular momentum with bull's-eye-assisted plasmonic coaxial waveguides[J]. SCIENTIFIC REPORTS,2015,5.
APA	Pu, Mingbo.,Ma, Xiaoliang.,Zhao, Zeyu.,Li, Xiong.,Wang, Yanqin.,...&Luo, Xiangang.(2015).Near-field collimation of light carrying orbital angular momentum with bull's-eye-assisted plasmonic coaxial waveguides.SCIENTIFIC REPORTS,5.
MLA	Pu, Mingbo,et al."Near-field collimation of light carrying orbital angular momentum with bull's-eye-assisted plasmonic coaxial waveguides".SCIENTIFIC REPORTS 5(2015).