Tamm phonon-polaritons: Localized states from phonon-light interactions
Open Access
- 8 April 2019
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 114 (14), 141101
- https://doi.org/10.1063/1.5089693
Abstract
We present experimental evidence of optical Tamm states at the interface of a one-dimensional photonic crystal made of porous Si and hexagonal SiC. This phenomenon occurs in the mid-infrared within the Reststrahlen band where SiC optically behaves as a metal due to phonons. We name the observed interface states Tamm phonon-polaritons by analogy to Tamm plasmon-polaritons at the interface of a photonic crystal and a metal. The high quality factor of the observed resonance makes polar dielectrics attractive materials to achieve Tamm states in the mid-infrared, which could benefit applications such as selective thermal emission and mid-infrared sensing.Keywords
Funding Information
- Natural Sciences and Engineering Research Council of Canada (PGSD3-442775-2013)
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