Spontaneous emission enhancement in metal-dielectric metamaterials
Optics
2015-05-30 v1 Materials Science
Abstract
We study the spontaneous emission of a dipole emitter imbedded into a layered metal-dielectric metamaterial. We demonstrate ultra-high values of the Purcell factor in such structures due to a high density of states with hyperbolic isofrequency surfaces. We reveal that the traditional effective-medium approach greatly underestimates the value of the Purcell factor due to the presence of an effective nonlocality, and we present an analytical model which agrees well with numerical calculations.
Keywords
Cite
@article{arxiv.1108.2128,
title = {Spontaneous emission enhancement in metal-dielectric metamaterials},
author = {Ivan Iorsh and Alexander Poddubny and Alexey Orlov and Pavel Belov and Yuri Kivshar},
journal= {arXiv preprint arXiv:1108.2128},
year = {2015}
}