Influence of exciton-exciton interaction on quantum beats

Takao Aoki, Georg Mohs, Makoto Kuwata Gonokami*, A. A. Yamaguchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


Spectrally resolved four-wave mixing measurements in wurtzite GaN show a dependence of the quantum beats‘ phase on incident polarizations. We observe different phases at the A-exciton and the B-exciton resonances when exciting with circular polarized light. The observed phase difference indicates that exciton-exciton interaction plays a major role in the quantum beat process. The developed analysis allows us to conclude that the spins of the electrons rather than the holes give the major contribution to the exciton-exciton interaction in GaN.

Original languageEnglish
Pages (from-to)3108-3111
Number of pages4
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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