Femtosecond time-resolved free-induction decay of room-temperature excitons in GaAs quantum wells

M. A. Mycek; S. Weiss; J. Y. Bigot; S. Schmitt-Rink; D. S. Chemla; W. Schaefer

doi:10.1063/1.106889

Femtosecond time-resolved free-induction decay of room-temperature excitons in GaAs quantum wells

M. A. Mycek
, S. Weiss
, J. Y. Bigot
, S. Schmitt-Rink
, D. S. Chemla
, W. Schaefer

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

We directly resolve the femtosecond free-induction decay of excitons in GaAs quantum wells at room temperature by upconverting the diffracted signal from a transient four-wave-mixing experiment. At high laser intensities, we find significant deviations from the temporal evolution of the time-integrated and peak amplitude signals, which we attribute to many-body Coulomb effects.

Original language	English
Pages (from-to)	2666-2668
Number of pages	3
Journal	Applied Physics Letters
Volume	60
Issue number	21
DOIs	https://doi.org/10.1063/1.106889
State	Published - 1992
Externally published	Yes

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title = "Femtosecond time-resolved free-induction decay of room-temperature excitons in GaAs quantum wells",

abstract = "We directly resolve the femtosecond free-induction decay of excitons in GaAs quantum wells at room temperature by upconverting the diffracted signal from a transient four-wave-mixing experiment. At high laser intensities, we find significant deviations from the temporal evolution of the time-integrated and peak amplitude signals, which we attribute to many-body Coulomb effects.",

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AU - Mycek, M. A.

AU - Weiss, S.

AU - Bigot, J. Y.

AU - Schmitt-Rink, S.

AU - Chemla, D. S.

AU - Schaefer, W.

PY - 1992

Y1 - 1992

N2 - We directly resolve the femtosecond free-induction decay of excitons in GaAs quantum wells at room temperature by upconverting the diffracted signal from a transient four-wave-mixing experiment. At high laser intensities, we find significant deviations from the temporal evolution of the time-integrated and peak amplitude signals, which we attribute to many-body Coulomb effects.

AB - We directly resolve the femtosecond free-induction decay of excitons in GaAs quantum wells at room temperature by upconverting the diffracted signal from a transient four-wave-mixing experiment. At high laser intensities, we find significant deviations from the temporal evolution of the time-integrated and peak amplitude signals, which we attribute to many-body Coulomb effects.

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Femtosecond time-resolved free-induction decay of room-temperature excitons in GaAs quantum wells

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