✦ LIBER ✦

Wood Anomalies in the Infrared Spectra of Grating-Coupler-Induced Surface Phonon Polaritons in GaAs

✍ Scribed by M. Giehler; H. Kostial; H. T. Grahn

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 200 KB
Volume: 215
Category: Article
ISSN: 0370-1972
DOI: 10.1002/(sici)1521-3951(199909)215:1<149::aid-pssb149>3.0.co;2-c

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✦ Synopsis

Infrared reflection spectra of GaAs with surface gratings contain the signature of surface phonon polaritons (SPPs) and Wood anomalies. For grating periods comparable with the vacuum wavelength of the SPPs, small gaps appear to be present in the SPP dispersion. For certain polarization conditions, the observed spectral features cannot be explained by the SPP dispersion of a flat surface alone.