Probing the electrodynamic local density of states with magnetoelectric point scatterers

Abstract

In a scattering experiment, the induced dipole moments of a magnetoelectric point scatterer in response to driving fields are given by its polarizability tensor α. Its linewidth will be dictated by the local density of optical states (LDOS) at the scatterer's position. To retrieve the magnetoelectric cross coupling components of αfor an archetypical magnetoelectric scatterer - a split ring resonator - we study the frequency dependent extinction cross section as a function of distance to an interface. Rather than following a purely electric or purely magnetic LDOS, we find a dependence which reflects the interplay of both dipole moments in a 'mixed' magnetoelectric LDOS. For a strongly magnetoelectric cross-coupled microwave scatterer, we compare analytical point dipole with finite element method calculations.

7 pages, 4 figures

References in corpus (4)

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• Magnetic Dipole and Electric Quadrupole Transitions in the Trivalent Lanthanide Series: Calculated Emission Rates and Oscillator Strengths
• Size dependent oscillator strength and quantum efficiency of CdSe quantum dots determined by controlling the local density of states
• Gray-Tone Lithography Implementation of Drexhage's Method for Calibrating Radiative and Nonradiative Decay Constants of Fluorophores

Cited by in corpus (4)

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