Experimental research on focusing property of radially polarized beam based on solid immersion lens

被引：8

作者：

Li, Qing ^{[1
]}

Wang, Jia ^{[1
]}

Xu, Jiying ^{[1
]}

Xi, Jiefeng ^{[1
]}

Jin, Guofan ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

来源：

OPTICAL REVIEW | 2006年 / 13卷 / 04期

关键词：

near-field optics; solid immersion lens (SIL); radially polarized beam; evanescent Bessel beam; virtual probe;

D O I：

10.1007/s10043-006-0283-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

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. (c) 2006 The Optical Society of Japan.

引用

页码：283 / 287

页数：5

共 15 条

[11] The formation of laser beams with pure azimuthal or radial polarization [J].

Oron, R ;

Blit, S ;

Davidson, N ;

Friesem, AA ;

Bomzon, Z ;

Hasman, E .

APPLIED PHYSICS LETTERS, 2000, 77 (21) :3322-3324

[12] Discontinuous phase elements for transverse mode selection in laser resonators [J].

Oron, R ;

Danziger, Y ;

Davidson, N ;

Friesem, AA ;

Hasman, E .

APPLIED PHYSICS LETTERS, 1999, 74 (10) :1373-1375

[13]

STEVE C.TIDWELL, 1990, APPL OPTICS, V29, P2234

[14] Generation of cylindrical vector beams with few-mode fibers excited by Laguerre-Gaussian beams [J].

Volpe, G ;

Petrov, D .

OPTICS COMMUNICATIONS, 2004, 237 (1-3) :89-95

[15] LIQUID-CRYSTAL POLARIZERS WITH AXIALLY SYMMETRICAL PROPERTIES [J].

YAMAGUCHI, R ;

NOSE, T ;

SATO, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 (09) :1730-1731

← 1 2 →