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Theory of the Spontaneous Emission in Photonic and Plasmonic Nanoresonators by Sauvan, C.; Hugonin, J. P.; Maksymov, I. S.; Lalanne, P. is a scholarly article available to read on EtoBox.

What is Theory of the Spontaneous Emission in Photonic and Plasmonic Nanoresonators about?

We provide a self-consistent electromagnetic theory of the coupling between dipole emitters and dissipative nanoresonators. The theory that relies on the concept of quasi-normal modes with complex frequencies provides an accurate closed-form expression for the electromagnetic local density of states (LDOS) of any photonic or plasmonic resonator with strong radiation leakage, absorption and material dispersion. It represents a powerful tool to calculate and conceptualize the electromagnetic response of systems that are governed by a small number of resonance modes. We use the formalism to revisit Purcell's factor. The new formula substantially differs from the usual one; in particular, it predicts that a spectral detuning between the emitter and the resonance does not necessarily result in a Lorentzian response in the presence of dissipation. Comparisons with fully-vectorial numerical calculations for plasmonic nanoresonators made of gold nanorods evidence the high accuracy of the predictions achieved by our semi-analytical treatment.

Author

Sauvan, C.; Hugonin, J. P.; Maksymov, I. S.; Lalanne, P.

Published

2013

Language

EN