Observation of coherent interfacial optical phonons in GaInP/GaAs/GaInP single quantum wells

Y. M. Chang, H. H. Lin, Chi-Ta Chia, Y. F. Chen

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Abstract

The coherent interfacial optical phonon dynamics of GaInP/GaAs/GaInP single quantum wells (SQW) were studied. The time resolved second harmonic generation (TRSHG) technique was used for the study of the phonon dynamics. A localized phonon mode at 9.4 THz was identified in the GaInP/GaAs hetero-interface. A window-gated Fourier transform was used to analyze the free induced dephasing of the interfacial phonon. A strong correlation between the dephasing time of coherent phonons and the growth temperature of the SQW sample was observed.

Original languageEnglish
Pages (from-to)2548-2550
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number14
DOIs
Publication statusPublished - 2004 Apr 5

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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