TY - JOUR
T1 - Biexcitons in short-pulse optical experiments in strong magnetic fields in GaAs quantum wells
AU - Bar-Ad, S.
AU - Bar-Joseph, I.
AU - Finkelstein, G.
AU - Levinson, Y.
PY - 1994
Y1 - 1994
N2 - We present time-resolved differential-absorption data for GaAs quantum wells, in which temporal oscillations originating in a biexcitonic pairing appear. We interpret the oscillations within a four-level model of the exciton-biexciton system, and discuss the cases of homogeneously and inhomogeneously broadened exciton absorption lines. Our differential absorption measurements in high magnetic fields normal to the quantum wells layers show that both the oscillations frequency and phase depend on the strength and direction of the magnetic field. The frequency change corresponds to the exciton Zeeman splitting in our samples. These findings are in excellent agreement with the predictions of the model, and thus verify its validity.
AB - We present time-resolved differential-absorption data for GaAs quantum wells, in which temporal oscillations originating in a biexcitonic pairing appear. We interpret the oscillations within a four-level model of the exciton-biexciton system, and discuss the cases of homogeneously and inhomogeneously broadened exciton absorption lines. Our differential absorption measurements in high magnetic fields normal to the quantum wells layers show that both the oscillations frequency and phase depend on the strength and direction of the magnetic field. The frequency change corresponds to the exciton Zeeman splitting in our samples. These findings are in excellent agreement with the predictions of the model, and thus verify its validity.
UR - http://www.scopus.com/inward/record.url?scp=0000877250&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.50.18375
DO - 10.1103/PhysRevB.50.18375
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AN - SCOPUS:0000877250
SN - 0163-1829
VL - 50
SP - 18375
EP - 18381
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 24
ER -