Abstract
The recent observation of an “atomic-like” AC Stark splitting in a semiconductor microcavity in which the Fabry-Pérot mode is resonant with the fundamental quantum-well excitonic transition1,2 has opened the following question: Is it possible to observe an AC Stark splitting when exciting in the exciton continuum? To answer this question we have studied the AC Stark effect—by means of fs pump-probe spectroscopy—in a GaAs λ microcavity having an extremely high finesse (quality factor Q > 2 × 104) and embedding a single, 8-nm-thick In0.03Ga0.97 As quantum well.
© 2000 Optical Society of America
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