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	Experimental research on focusing property of radially polarized beam based on solid immersion lens
	Qing Li ; Jia Wang ; Jiying Xu ; Jiefeng Xi ; Guofan Jin
	2010-05-10 ; 2010-05-10
关键词	Experimental/ laser beams lenses light polarisation liquid crystal devices near-field scanning optical microscopy optical fibres optical focusing/ focusing property radially polarized beam solid immersion lens near-field optical virtual probe evanescent Bessel beam fiber device liquid crystal device annular beam high numerical aperture objective near-field distribution scanning near-field optical microscope/ A0779 Scanning probe microscopy and related techniques A0760P Optical microscopy A4281W Other fibre optical devices and techniques A4280A Optical lenses and mirrors A4260H Laser beam characteristics and interactions B4125 Fibre optics B4150D Liquid crystal devices B4330 Laser beam interactions and properties
中文摘要	Realization of a near-field optical virtual probe based on an evanescent Bessel beam is strongly dependent on a radially polarized beam; this makes it essential to study the focusing property of the beam. In this paper, two experimental setups based on a fiber device and a liquid crystal device, respectively, are built to generate a radially polarized beam. This beam and an annular radially polarized beam are focused by means of a high numerical aperture objective and a solid immersion lens (SIL), Near-field distribution of the focus spot, the evanescent Bessel field, is experimentally measured with a scanning near-field optical microscope (SNOM). The full width at half maximum (FWHM) of the central peak of the evanescent Bessel field is about 200 nm in the close vicinity of the bottom surface of SIL. This has potential for use as a near-field optical virtual probe.
语种	英语 ; 英语
出版者	Opt. Soc. Japan ; Japan
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24819]
专题	清华大学
推荐引用方式 GB/T 7714	Qing Li,Jia Wang,Jiying Xu,et al. Experimental research on focusing property of radially polarized beam based on solid immersion lens[J],2010, 2010.
APA	Qing Li,Jia Wang,Jiying Xu,Jiefeng Xi,&Guofan Jin.(2010).Experimental research on focusing property of radially polarized beam based on solid immersion lens..
MLA	Qing Li,et al."Experimental research on focusing property of radially polarized beam based on solid immersion lens".(2010).

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