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

L. Shi; Fernando Ponce; Jose Menendez

doi:10.1063/1.1737792

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

L. Shi, Fernando Ponce, Jose Menendez

Physics

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

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 language	English (US)
Pages (from-to)	3471-3473
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	18
DOIs	https://doi.org/10.1063/1.1737792
State	Published - May 3 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1737792

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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.",

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AU - Shi, L.

AU - Ponce, Fernando

AU - Menendez, Jose

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N2 - 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.

AB - 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.

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

Abstract

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