Radiative and non-radiative local density of states on disordered plasmonic films

Details Radiative and non-radiative local density of states on disordered plasmonic films Radiative and non-radiative local density of states on disordered plasmonic films

2012-02-15

arxiv.org/abs/1202.3360v2

Physics

Optics

Scientific paper

We present numerical calculations of the Local Density of Optical States (LDOS) in the near field of disordered plasmonic films. The calculations are based on an integral volume method, that takes into account polarization and retardation effects, and allows us to discriminate radiative and non-radiative contributions to the LDOS. At short distance, the LDOS is dominated by non-radiative channels, showing that changes in the spontaneous dynamics of dipole emitters are driven by non-radiative coupling to plasmon modes. Maps of radiative and non-radiative LDOS exhibit strong fluctuations, but with substantially different spatial distributions.

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