Raman line shape of the A 1 longitudinal optical phonon in GaN

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Abstract

High-resolution Raman measurements of the A 1 longitudinal optical (LO) phonon in GaN were performed. The studies showed a strong evidence that the observed discrepancies between time- and frequency-domain Raman measurements of the A 1 LO phonon were due to the angular dispersion of the mode's frequency. The scattered wave vector direction in the Raman experiment fell within a solid angle that was determined by the collection optics. The true anharmonic broadening was extracted and its value was found to be in agreement with time-domain experiments.

Original languageEnglish (US)
Pages (from-to)3471-3473
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number18
DOIs
StatePublished - May 3 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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