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

Journal Article · Mon Mar 31 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4870255· OSTI ID:22261614

Streyer, W.; Law, S.; Rosenberg, A.; Wasserman, D. ^[1]; Roberts, C.; Podolskiy, V. A. ^[2]; Hoffman, A. J. ^[3]

---

1. Department of Electrical and Computer Engineering, University of Illinois Urbana Champaign, Urbana, Illinois 61801 (United States)
2. Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States)
3. Department of Electrical Engineering, University of Notre Dame, South Bend, Indiana 46556 (United States)

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.

• OSTI ID: 22261614
• Journal Information: Applied Physics Letters, Vol. 104, Issue 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BLACKBODY RADIATION
EMISSION SPECTROSCOPY
EXCITATION
FINITE ELEMENT METHOD
FOURIER TRANSFORMATION
GALLIUM
PHONONS
POLARONS
SURFACES
WAVE PROPAGATION