Three-dimensional subwavelength confinement of light with dielectric microspheres

被引：122

作者：

Devilez, Alexis ^{[1
]}

Bonod, Nicolas ^{[1
]}

Wenger, Jerome ^{[1
]}

Gerard, Davy ^{[1
]}

Stout, Brian ^{[1
]}

Rigneault, Herve ^{[1
]}

Popov, Evgeny ^{[1
]}

机构：

[1] Aix Marseille Univ, Inst Fresnel, CNRS, F-13397 Marseille, France

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 04期

关键词：

PHOTONIC NANOJETS; NANOPARTICLES; BACKSCATTERING; ENHANCEMENT; SCATTERING;

D O I：

10.1364/OE.17.002089

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dielectric microspheres are shown to be capable of confining light in a three-dimensional region of subwavelength dimensions when they are illuminated by tightly focused Gaussian beams. We show that a simple configuration, not involving resonances, permits one to reach an effective volume as small as 0.6 (lambda/n)(3). It is shown that this three-dimensional confinement arises from interferences between the field scattered by the sphere and the incident Gaussian beam containing high angular components. (C) 2009 Optical Society of America

引用

页码：2089 / 2094

页数：6

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