Quantum beats of free and bound excitons in GaN

K. Kyhm, R. A. Taylor, J. F. Ryan, T. Aoki, M. Kuwata-Gonokami, B. Beaumont, P. Gibart

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3 Citations (Scopus)


We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D 0X) and A excitons (XA) results in quantum beats, corresponding to the energy splitting between D 0X and XA. The temperature-dependent dephasing rate is used to deduce the strength of the D 0X-acoustic-phonon interaction via the homogeneous linewidth.

Original languageEnglish
Pages (from-to)1097-1099
Number of pages3
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 2001 Aug 20
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Kyhm, K., Taylor, R. A., Ryan, J. F., Aoki, T., Kuwata-Gonokami, M., Beaumont, B., & Gibart, P. (2001). Quantum beats of free and bound excitons in GaN. Applied Physics Letters, 79(8), 1097-1099. https://doi.org/10.1063/1.1391411