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Conferences > UP > 1990 > ThD > ThD5

Femtosecond Transient-Grating Experiments in Quantum Wells

Karl Leo, Ernst O. Göbel, T.C. Damen, Jagdeep Shah, S. Schmitt-Rink, W. Schäfer, C. Stafford, J.F. Müller, K. Köhler, and P. Ganser

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Abstract

Time-resolved four-wave mixing allows to study the loss of coherence of optically excited states in molecules and solids. We have applied the transient grating technique with femtosecond time resolution to GaAs/AlGaAs Double Quantum Wells to show that the decay of the macroscopic polarization due to dephasing yields information about the nature and interaction of the excited states.

© 1990 Optical Society of America

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