Tamm plasmon polaritons: Slow and spatially compact light

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 f...

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Bibliographic Details
Published in:	Applied physics letters Vol. 92; no. 25; pp. 251112 - 251112-3
Main Authors:	Sasin, M. E., Seisyan, R. P., Kalitteevski, M. A., Brand, S., Abram, R. A., Chamberlain, J. M., Egorov, A. Yu, Vasil'ev, A. P., Mikhrin, V. S., Kavokin, A. V.
Format:	Journal Article
Language:	English
Published:	American Institute of Physics 23-06-2008
Online Access:	Get full text
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Summary:	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 Ga As ∕ Al As 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.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.2952486