Tamm plasmon-polaritons: First experimental observation |
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| Authors: | ME Sasin RP Seisyan MA Kaliteevski S Brand RA Abram JM Chamberlain IV Iorsh IA Shelykh AYu Egorov AP Vasil’ev VS Mikhrin AV Kavokin |
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| Institution: | 1. Department of Physics, Durham University, Durham, DH13LE, UK;2. Ioffe Physicotechnical Institute, St-Petersburg, Russia;3. Physics Faculty, University of Rome “Tor Vergata”, 00133, Rome, Italy;4. Physics and Astronomy School, University of Southampton, Southampton, SO171BJ, UK |
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| Abstract: | We report on the first experimental observation of Tamm plasmon-polaritons (TPP) formed at the interface between a metal and a dielectric Bragg reflector (DBR). Contrary to conventional surface plasmons, TPPs have an in-plane wave vector less than the wave vector of light in vacuum, which allows for their direct optical excitation, and can be formed in both the TE and TM polarizations. 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 at room temperature. The in-plane dispersion of TTPs is parabolic with an effective mass 4×10−5 of the free electron mass. |
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| Keywords: | Plasmon Polariton Dielectric Bragg reflector Semiconductor |
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