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Spontaneous emission enhancement in metal-dielectric metamaterials

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arxiv 1108.2128 v1 pith:32QMGTDQ submitted 2011-08-10 physics.optics cond-mat.mtrl-sci

Spontaneous emission enhancement in metal-dielectric metamaterials

Ivan Iorsh , Alexander Poddubny , Alexey Orlov , Pavel Belov , Yuri Kivshar This is my paper
classification physics.optics cond-mat.mtrl-sci
keywords emissionfactormetal-dielectricpurcellspontaneousagreesanalyticalapproach
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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