Numerical study of an apertureless near field scanning optical microscope probe under radial polarization illumination

被引：83

作者：

Chen, Weibin ^{[1
]}

Zhan, Qiwen ^{[1
]}

机构：

[1] Univ Dayton, Electoopt Grad Program, Dayton, OH 45469 USA

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 07期

关键词：

D O I：

10.1364/OE.15.004106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An axially symmetric three-dimensional finite element method model is applied to investigate the electromagnetic field distribution in the vicinity of a silver coated glass tip. Under radially polarized illumination, a strongly enhanced field located at the apex of the tip is found due to the constructive interference of surface plasmon propagating at the air/silver interface. The enhancement factor and surface plasmon resonance excitation are analyzed systematically. The optimal condition for field enhancement is investigated through the exploration of different taper angles of the tip and the illumination geometry. The numerical studies show that a significantly enhanced localized electromagnetic field with a full-width- half-maximum of 10 nm is obtainable with 632.8 nm optical excitation. (c) 2007 Optical Society of America.

引用

页码：4106 / 4111

页数：6

共 25 条

[1] Apertureless near-field optical microscopy: A study of the local tip field enhancement using photosensitive azobenzene-containing films [J].

Bachelot, R ;

H'Dhili, F ;

Barchiesi, D ;

Lerondel, G ;

Fikri, R ;

Royer, P ;

Landraud, N ;

Peretti, J ;

Chaput, F ;

Larnpel, G ;

Boilot, JP ;

Lahlil, K .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (03) :2060-2072

[2] BREAKING THE DIFFRACTION BARRIER - OPTICAL MICROSCOPY ON A NANOMETRIC SCALE [J].

BETZIG, E ;

TRAUTMAN, JK ;

HARRIS, TD ;

WEINER, JS ;

KOSTELAK, RL .

SCIENCE, 1991, 251 (5000) :1468-1470

[3] SINGLE MOLECULES OBSERVED BY NEAR-FIELD SCANNING OPTICAL MICROSCOPY [J].

BETZIG, E ;

CHICHESTER, RJ .

SCIENCE, 1993, 262 (5138) :1422-1425

[4] Plasmon-coupled tip-enhanced near-field optical microscopy [J].

Bouhelier, A ;

Renger, J ;

Beversluis, MR ;

Novotny, L .

JOURNAL OF MICROSCOPY, 2003, 210 :220-224

[5] Field-enhanced scanning near-field optical microscopy [J].

Bouhelier, Alexandre .

MICROSCOPY RESEARCH AND TECHNIQUE, 2006, 69 (07) :563-579

[6] Optimal plasmonic focusing with radial polarization [J].

Chen, Weibin ;

Zhan, Qiwen .

PLASMONICS IN BIOLOGY AND MEDICINE IV, 2007, 6450

[7] Sharper focus for a radially polarized light beam [J].

Dorn, R ;

Quabis, S ;

Leuchs, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (23)

[8] Simulations of atomic resolution tip-enhanced optical microscopy [J].

Downes, Andrew ;

Salter, Donald ;

Elfick, Alistair .

OPTICS EXPRESS, 2006, 14 (23) :11324-11329

[9] Modeling recent experiments of apertureless near-field optical microscopy using 2D finite element method [J].

Fikri, R ;

Barchiesi, D ;

H'Dhili, F ;

Bachelot, R ;

Vial, A ;

Royer, P .

OPTICS COMMUNICATIONS, 2003, 221 (1-3) :13-22

[10] Optimized apertureless optical near-field probes with 15 nm optical resolution [J].

Frey, H. G. ;

Bolwien, C. ;

Brandenburg, A. ;

Ros, R. ;

Anselmetti, D. .

NANOTECHNOLOGY, 2006, 17 (13) :3105-3110

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