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Spontaneous light generation in twin semiconductor waveguides

Morgado, T. A. ; Silveirinha, M. G.

Spontaneous light generation in twin semiconductor waveguides, Proc Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Oxford, United Kingdom, Vol. , pp. - , September, 2015.

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Here we study the electromagnetic instabilities in a system formed by two twin semiconductor waveguides separated by a vacuum layer in two different scenarios: (i) semiconductor slabs in relative motion, and (ii) in the presence of an electron drift. It is shown that the flow of electrons can mimic the response of a moving material slab, inducing exponentially growing light oscillations. The oscillations result from the hybridization of the surface plasmon polaritons (SPPs) supported by each air-semiconductor interface.