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arXiv · 1108.2128

Spontaneous emission enhancement in metal-dielectric metamaterials

Ivan Iorsh·Alexander Poddubny·Alexey Orlov·Pavel Belov·Yuri Kivshar
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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.

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Ivan Iorsh, Alexander Poddubny, Alexey Orlov, Pavel Belov, Yuri Kivshar. 2011-08-10. Spontaneous emission enhancement in metal-dielectric metamaterials. https://doi.org/10.1016/j.physleta.2011.11.001

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