We have observed stimulated emission of surface plasmon polaritons (SPPs) in dye-doped polymeric microcylinder cavities deposited onto gold and silver wires. The stimulated emission spectra featured a characteristic series of laser modes, with modal spacing corresponding to SPPs propagating at the interface between the metal and dielectric. A plasmonic microlaser adds to the toolbox of plasmonic devices and plasmonic metamaterials and enables on-chip plasmonic generation and loss compensation.
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Kitur et al. (2011) studied this question.
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