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Department of Physics

Staff profile

Publication details for Prof Richard Abram

Sasin, M.E., Seisyan, R.P., Kaliteevski, M.A., Brand, S., Abram, R.A., Chamberlain, J.M., Egorov, A.Y., Vasil'ev, A.P., Mikhrin, V.S. & Kavokin, A.V. (2008). Tamm plasmon polaritons: Slow and spatially compact light. Applied Physics Letters 92(25): 251112.

Author(s) from Durham

Abstract

We report on the first experimental observation of Tamm plasmon polaritons (TPPs) formed at the interface between a metal and a dielectric Bragg reflector (DBR). In contrast to conventional surface plasmons, TPPs have an in-plane wavevector less than the wavevector of light in vacuum, which allows for their direct optical excitation. The angular resolved reflectivity and transmission spectra of a GaAs/AlAs DBR covered by Au films of various thicknesses show the resonances associated with the TPP at low temperatures and room temperature. The in-plane dispersion of TTPs is parabolic with an effective mass of 4×10−5 of the free electron mass.