TY - JOUR
T1 - Scattering processes and dynamics of exciton-biexciton system in GaN
AU - Adachi, Satoru
AU - Hazu, Kouji
AU - Sota, Takayuki
AU - Chichibu, Shigefusa F.
AU - Mukai, Takashi
AU - Muto, Shunichi
AU - Suzuki, Katsuo
N1 - Funding Information:
by Casio Science Promotion Foundation, T EPCO Research Foundation, NSGF,
Publisher Copyright:
© 2003 SPIE. All rights reserved.
PY - 2003/5/30
Y1 - 2003/5/30
N2 - 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.
AB - 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.
KW - Biexciton
KW - Exciton-Exciton Correlation
KW - Four-Wave Mixing
KW - GaN
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U2 - 10.1117/12.475699
DO - 10.1117/12.475699
M3 - Conference article
AN - SCOPUS:1942482103
VL - 4992
SP - 188
EP - 201
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
T2 - Ultrafast Phenomena in Semiconductors VII 2003
Y2 - 25 January 2003 through 31 January 2003
ER -