Engineering absorption and blackbody radiation in the far-infrared with surface phonon polaritons on gallium phosphide

W. Streyer, S. Law, A. Rosenberg, C. Roberts, V. A. Podolskiy, A. J. Hoffman, D. Wasserman

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number131105
JournalApplied Physics Letters
Volume104
Issue number13
DOIs
StatePublished - Mar 31 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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