TY - JOUR
T1 - Spectral width dependence of residual carrier effect on nonlinear optical response of weakly confined excitons
AU - Kojima, O.
AU - Isu, T.
AU - Ishi-Hayase, J.
AU - Sasaki, M.
AU - Kanno, A.
AU - Katouf, R.
AU - Tsuchiya, M.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - We report residual carrier effects on the nonlinear optical response of weakly confined excitons in GaAs thin films. The nonlinear response was investigated using a degenerate four-wave mixing technique with an additional pulse to create the residual carriers. In the case of the additional-pulse incidence, the signal intensity decreases with the time of incidence. However, the ultrafast component comparable to the pulse width in the temporal profiles does not change appreciably. Our results imply the possibility of the realization of ultrafast switching using the exciton response.
AB - We report residual carrier effects on the nonlinear optical response of weakly confined excitons in GaAs thin films. The nonlinear response was investigated using a degenerate four-wave mixing technique with an additional pulse to create the residual carriers. In the case of the additional-pulse incidence, the signal intensity decreases with the time of incidence. However, the ultrafast component comparable to the pulse width in the temporal profiles does not change appreciably. Our results imply the possibility of the realization of ultrafast switching using the exciton response.
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U2 - 10.1002/pssc.200779231
DO - 10.1002/pssc.200779231
M3 - Conference article
AN - SCOPUS:57649103915
VL - 5
SP - 2858
EP - 2860
JO - Physica Status Solidi C: Conferences
JF - Physica Status Solidi C: Conferences
SN - 1862-6351
IS - 9
T2 - 34th International Symposium on Compound Semiconductors, ISCS-2007
Y2 - 15 October 2007 through 18 October 2007
ER -