TY - JOUR
T1 - Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films
AU - Kojima, O.
AU - Isu, T.
AU - Ishi-Hayase, J.
AU - Sasaki, M.
AU - Tsuchiya, M.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We report on an ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films observed by a two-beam degenerate four-wave-mixing (DFWM) technique. An ultrafast optical response comparable to the pulse width appears under ultrashort-pulse-laser excitation condition. We clarified from the DFWM spectra that the plural exciton states contribute to the ultrafast response. The results imply a possibility of ultrafast switching devices using weakly confined excitons.
AB - We report on an ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films observed by a two-beam degenerate four-wave-mixing (DFWM) technique. An ultrafast optical response comparable to the pulse width appears under ultrashort-pulse-laser excitation condition. We clarified from the DFWM spectra that the plural exciton states contribute to the ultrafast response. The results imply a possibility of ultrafast switching devices using weakly confined excitons.
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U2 - 10.1002/pssc.200674280
DO - 10.1002/pssc.200674280
M3 - Conference article
AN - SCOPUS:40649086748
SN - 1862-6351
VL - 4
SP - 1731
EP - 1734
JO - Physica Status Solidi (C) Current Topics in Solid State Physics
JF - Physica Status Solidi (C) Current Topics in Solid State Physics
IS - 5
T2 - 33rd International Symposium on Compound Semiconductors, ISCS-2006
Y2 - 13 August 2006 through 17 August 2006
ER -