Optical gain, spontaneous and stimulated emission of surface plasmon polaritons in confined plasmonic waveguide.
We develop a theoretical model to compute the local density of states in a confined plasmonic waveguide. Based on this model, we derive a simple formula with a clear physical interpretation for the lifetime modification of emitters embedded in the waveguide. The gain distribution within the active medium is then computed following the formalism developed in a recent work [Phys. Rev. B 78, 161401 (2008)], by taking rigorously into account the pump irradiance and emitters lifetime modifications in the system. We finally apply this formalism to describe gain-assisted propagation in a dielectric-loaded surface plasmon polariton waveguide.
Colas des Francs
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Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 5209 CNRS - Université de Bourgogne, 9 Av A Savary, BP 47 870, 21078 Dijon, France. gerard.colas-des-francs@u-bourgogne.fr
Bramant
P
P
Grandidier
J
J
Bouhelier
A
A
Weeber
J-C
JC
Dereux
A
A
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014894:Weights and Measures