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

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.023807· OSTI ID:22068549

Poddubny, Alexander N ^[1]; Belov, Pavel A ^[1]; Kivshar, Yuri S ^[1]

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1. Department of Photonics and Optoinformatics, St. Petersburg University for Information Technology, Mechanics and Optics (ITMO), St. Petersburg RU-197101 (Russian Federation)

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.

• OSTI ID: 22068549
• Journal Information: Physical Review. A, Vol. 84, Issue 2; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
36 MATERIALS SCIENCE
DIPOLES
LIGHT SOURCES
PERMITTIVITY
PHOTON EMISSION
RADIATIVE DECAY
WAVELENGTHS