Abstract
We report the enhancement of the nonlinear optical response of the weakly confined excitons with use of spectrally rectangular pulse. The nonlinear optical response was investigated as a function of excitation energy by a degenerate four-wave-mixing (DFWM) technique. In the case that the laser pulse with the controlled spectral shape excites the plural exciton states simultaneously, the DFWM signal intensity is enhanced by a factor of two in comparison with the intensity under the excitation of a single exciton state. This enhancement is caused by the superposition of the nonlinear optical responses from the plural exciton states.
| Original language | English |
|---|---|
| Article number | 124 |
| Pages (from-to) | 618-622 |
| Number of pages | 5 |
| Journal | Journal of Physics: Conference Series |
| Volume | 61 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2007 Apr 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Enhancement of nonlinear optical response of weakly confined excitons in GaAs thin films by spectrally rectangle-shape-pulse-excitation. / Kojima, O.; Isu, T.; Hayase, Junko; Sasaki, M.; Tsuchiya, M.
In: Journal of Physics: Conference Series, Vol. 61, No. 1, 124, 01.04.2007, p. 618-622.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancement of nonlinear optical response of weakly confined excitons in GaAs thin films by spectrally rectangle-shape-pulse-excitation
AU - Kojima, O.
AU - Isu, T.
AU - Hayase, Junko
AU - Sasaki, M.
AU - Tsuchiya, M.
PY - 2007/4/1
Y1 - 2007/4/1
N2 - We report the enhancement of the nonlinear optical response of the weakly confined excitons with use of spectrally rectangular pulse. The nonlinear optical response was investigated as a function of excitation energy by a degenerate four-wave-mixing (DFWM) technique. In the case that the laser pulse with the controlled spectral shape excites the plural exciton states simultaneously, the DFWM signal intensity is enhanced by a factor of two in comparison with the intensity under the excitation of a single exciton state. This enhancement is caused by the superposition of the nonlinear optical responses from the plural exciton states.
AB - We report the enhancement of the nonlinear optical response of the weakly confined excitons with use of spectrally rectangular pulse. The nonlinear optical response was investigated as a function of excitation energy by a degenerate four-wave-mixing (DFWM) technique. In the case that the laser pulse with the controlled spectral shape excites the plural exciton states simultaneously, the DFWM signal intensity is enhanced by a factor of two in comparison with the intensity under the excitation of a single exciton state. This enhancement is caused by the superposition of the nonlinear optical responses from the plural exciton states.
UR - http://www.scopus.com/inward/record.url?scp=34247485944&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247485944&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/61/1/124
DO - 10.1088/1742-6596/61/1/124
M3 - Article
AN - SCOPUS:34247485944
VL - 61
SP - 618
EP - 622
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 124
ER -