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

Alexander N. Poddubny, Pavel A. Belov, and Yuri S. Kivshar

Phys. Rev. A 84, 023807 – Published 8 August 2011

Abstract

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.

Received 28 May 2011

DOI:https://doi.org/10.1103/PhysRevA.84.023807

Authors & Affiliations

Alexander N. Poddubny^1,2, Pavel A. Belov^1,3, and Yuri S. Kivshar^1,4

¹Department of Photonics and Optoinformatics, St. Petersburg University for Information Technology, Mechanics and Optics (ITMO), St. Petersburg RU-197101, Russia
²Ioffe Physical-Technical Institute of the Russian Academy of Science, St. Petersburg RU-194021, Russia
³School of Electronic Engineering and Computer Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
⁴Nonlinear Physics Center and Center for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia

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Issue

Vol. 84, Iss. 2 — August 2011

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