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Time resolved excitonic coherent polarization dynamics in GaAs multiple quantum wells

Bipul Pal·A. S. Vengurlekar
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Abstract

We investigate pump induced modulation in the temporal evolution of the excitonic coherent polarization generated by a probe pulse in GaAs multiple quantum wells. For this, we perform fs time resolved pump-probe reflectivity measurements using frequency upconversion at both positive and negative pump-probe delays. A contribution arising from interference of excitonic linear and nonlinear polarization, which is usually not considered in describing pump-probe experiments, is required to understand the results.

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Bipul Pal, A. S. Vengurlekar. 2003-06-23. Time resolved excitonic coherent polarization dynamics in GaAs multiple quantum wells. https://doi.org/10.1103/physrevb.68.205331

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