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

Poddubny, Alexander N; Belov, Pavel A; Kivshar, Yuri


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.

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.84.023807
Access Rights: Open Access


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