Tamm plasmon polaritons: Slow and spatially compact light

Author:

Sasin M. E.1,Seisyan R. P.1,Kalitteevski M. A.12,Brand S.2,Abram R. A.2,Chamberlain J. M.2,Egorov A. Yu.1,Vasil’ev A. P.1,Mikhrin V. S.1,Kavokin A. V.34

Affiliation:

1. Ioffe Physicotechnical Institute 1 , St-Petersburg 194021, Russia

2. Durham University 2 Physics Department, , South Road, Durham DH1 3LE, United Kingdom

3. University of Rome “Tor Vergata,” 3 Physics Faculty, 1 Via della Ricerca Scientifica, 00133 Rome, Italy

4. University of Southampton 4 Physics and Astronomy School, , Highfield, Southampton SO17 1BJ, United Kingdom

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.

Publisher

AIP Publishing

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