Scattering processes and dynamics of exciton-biexciton system in GaN

Satoru Adachi*, Kouji Hazu, Takayuki Sota, Shigefusa F. Chichibu, Takashi Mukai, Shunichi Muto, Katsuo Suzuki

*この研究の対応する著者

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

Bound and unbound biexcitons in a free-standing bulk GaN are investigated by time-integrated and spectrallyresolved four-wave mixing measurements, where the formation of hetero-biexcitons that consist of A and B excitons (XXAB) as well as A-biexcitons (XXAA) and their unbound biexciton (XX AA) are clearly observed. The FWM spectra and delay-Time dependence are explained qualitatively and the interaction between A-And B-excitons gives rise to the phase shifts of the quantum beating and the energy shifts of the spectra, which is considered as the effect of the unbound state of XXAB (i.e. XX AB). The unbound A-biexciton (XX AA) is also observed clearly in spectral and temporal domain and is found to play an important role in FWM signals for all polarizations.

本文言語English
ページ(範囲)188-201
ページ数14
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
4992
DOI
出版ステータスPublished - 2003 5 30
イベントUltrafast Phenomena in Semiconductors VII 2003 - San Jose, United States
継続期間: 2003 1 252003 1 31

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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