Università degli Studi di Cagliari
The microcavity AC Stark triplet: Excitation in the exciton continuum
QUOCHI, FRANCESCO;SABA, MICHELE;BONGIOVANNI, GIOVANNI LUIGI CARLO;MURA, ANTONIO ANDREA
2000-01-01
Abstract
The coherent optical response of high quality microcavities containing quantum wells is investigated. The dynamics of the ac Stark effect is investigated by degenerate pump-probe experiments, by exciting the quantum well excitons at various intensities and detunings. The evolution from a simple dynamical excitonic Stark shift to a splitting is dearly observed, even when the excitation is degenerate with the continuum states. The experimental results agree well with the predictions of a theoretical model based on the semiconductor Maxwell-Bloch equations.
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