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Direct observation of the excitonic ac Stark splitting in a quantum well

Michele Saba, Francesco Quochi, Cristiano Ciuti, Denis Martin, Jean-Louis Staehli, Benoît Deveaud, Andrea Mura, and Giovanni Bongiovanni
Phys. Rev. B 62, R16322(R) – Published 15 December 2000
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Abstract

Ultrafast pump-probe measurements evidence the dynamical Stark splitting in the exciton absorption spectrum of a single semiconductor quantum well. The intensity of the Stark sidebands in the spectrum is comparable to the linear absorption and their separation scales as the pump field amplitude. In the time domain the Rabi oscillations are observed. The semiconductor Bloch equations solved in the Hartree-Fock approximation demonstrate that the coherent exciton-light coupling dominates over the many-body dephasing.

  • Received 7 October 2000

DOI:https://doi.org/10.1103/PhysRevB.62.R16322

©2000 American Physical Society

Authors & Affiliations

Michele Saba, Francesco Quochi, Cristiano Ciuti, Denis Martin, Jean-Louis Staehli, and Benoît Deveaud

  • Physics Department, Federal Institute of Technology Lausanne, PH-Ecublens, CH-1015 Lausanne-EPFL, Switzerland

Andrea Mura and Giovanni Bongiovanni

  • Dipartimento di Fisica and Istituto Nazionale di Fisica della Materia, Università degli Studi di Cagliari, Cagliari, Italy

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Issue

Vol. 62, Iss. 24 — 15 December 2000

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