Spontaneous radiation of a finite-size dipole emitter in hyperbolic media

被引：145

作者：

Poddubny, Alexander N. ^{[1
,2
]}

Belov, Pavel A. ^{[1
,3
]}

Kivshar, Yuri S. ^{[1
,4
,5
]}

机构：

[1] St Petersburg Univ Informat Technol Mech & Opt IT, Dept Photon & Optoinformat, RU-197101 St Petersburg, Russia

[2] Russian Acad Sci, AF Ioffe Phys Tech Inst, RU-194021 St Petersburg, Russia

[3] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

[4] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 0200, Australia

[5] Australian Natl Univ, Res Sch Phys & Engn, Ctr Ultrahigh Bandwidth Devices Opt Syst CUDOS, Canberra, ACT 0200, Australia

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 02期

基金：

英国工程与自然科学研究理事会; 澳大利亚研究理事会;

关键词：

SPONTANEOUS-EMISSION; NEGATIVE REFRACTION; RESONANCE; DECAY;

D O I：

10.1103/PhysRevA.84.023807

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the radiative decay and Purcell effect for a finite-size dipole emitter placed in a homogeneous uniaxial medium. We demonstrate that the radiative rate is strongly enhanced when the signs of the medium longitudinal and transverse dielectric constants are opposite, and that the isofrequency contour corresponds to a hyperbolic medium. We reveal that the Purcell enhancement factor remains finite even in the absence of losses and that it depends on the emitter size.

引用

页数：6

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