Publication details for Dr Stuart BrandSasin, 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.
- Publication type: Journal Article
- ISSN/ISBN: 0003-6951, 1077-3118
- DOI: 10.1063/1.2952486
- Keywords: Aluminium compounds, Distributed Bragg reflectors, Gallium arsenide, Gold, III-V semiconductors, Metallic thin films, Polaritons, Surface plasmons.
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
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.