Light emission in nonlocal plasmonic metamaterials

TY - JOUR

T1 - Light emission in nonlocal plasmonic metamaterials

AU - Podolskiy, Viktor A.

AU - Ginzburg, Pavel

AU - Wells, Brian

AU - Zayats, Anatoly V.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - We present analytical and computational studies of light emission in nonlocal metamaterials formed by arrays of aligned plasmonic nanowires. We demonstrate that the emission lifetime in these composites is a complex function of geometrical and material parameters of the system that cannot be reduced to the "trivial" hyperbolic or elliptical dispersion topology of a homogenised metamaterial. In particular, our studies suggest that the Purcell factor can often be maximized when the composite operates in the elliptic regime, with strong radiation coupling to an additional TM-polarized mode supported by the nonlocal composite, in contrast to the accepted "hyperbolicity related" enhancement.

AB - We present analytical and computational studies of light emission in nonlocal metamaterials formed by arrays of aligned plasmonic nanowires. We demonstrate that the emission lifetime in these composites is a complex function of geometrical and material parameters of the system that cannot be reduced to the "trivial" hyperbolic or elliptical dispersion topology of a homogenised metamaterial. In particular, our studies suggest that the Purcell factor can often be maximized when the composite operates in the elliptic regime, with strong radiation coupling to an additional TM-polarized mode supported by the nonlocal composite, in contrast to the accepted "hyperbolicity related" enhancement.

UR - http://www.scopus.com/inward/record.url?scp=84930017057&partnerID=8YFLogxK

U2 - 10.1039/c4fd00186a

DO - 10.1039/c4fd00186a

M3 - Article

AN - SCOPUS:84930017057

SN - 1359-6640

VL - 178

SP - 61

EP - 70

JO - Faraday Discussions

JF - Faraday Discussions

ER -