Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4870255
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Funding
- NSF (MWN program) [1209761]
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We demonstrate excitation of surface phonon polaritons on patterned gallium phosphide surfaces. Control over the light-polariton coupling frequencies is demonstrated by changing the pattern periodicity and used to experimentally determine the gallium phosphide surface phonon polariton dispersion curve. Selective emission via out-coupling of thermally excited surface phonon polaritons is experimentally demonstrated. Samples are characterized experimentally by Fourier transform infrared reflection and emission spectroscopy, and modeled using finite element techniques and rigorous coupled wave analysis. The use of phonon resonances for control of emissivity and excitation of bound surface waves offers a potential tool for the exploration of long-wavelength Reststrahlen band frequencies. (C) 2014 AIP Publishing LLC.
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