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Plasmonic parametric oscillator via coupling between optically and electrically induced plasmons

In this paper, we propose a plasmonic parametric oscillator. The device is based on coupling between optically generated and electrically induced surface plasmon waves. The device can be used for a variety of applications involving spectrum analysis, widely tunable electromagnetic emitters, heterodyne detection, and amplification. We developed Maxwell's equations based on the theoretical model of the coupling between plasmons and electrically induced plasmons. Electrically induced plasmons are generated when a current is injected in the vicinity of a metallic grating. The coupling between the two kinds of plasmon bands is dependent on the skin depth of each. The skin depth of an optically generated plasmon is well known, while the skin depth of an electrically induced plasmon vanishes as the grating frequency becomes small or the injected current becomes large.