Coherent exciton-biexciton dynamics in GaN

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

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Spectrally resolved and time-integrated four-wave mixing are used to measure the polarization dependence of biexcitonic signals and quantum beats between two-A-exciton (XAXAZ*) and A-biexciton (XAXA) states in a high-quality GaN epilayer. Mixed beats with two periods are observed: the first beating period corresponds to the energy splitting between XAXA*and XAXA; the second period corresponds to beating between A excitons (XA) and donor bound excitons (DOX). We also measure the polarization-dependent B-biexciton (XBXB) signal. The effective masses for the A and B holes are deduced from the binding energy.

Original languageEnglish
Article number193102
Pages (from-to)1931021-1931024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number19
Publication statusPublished - 2002 May 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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