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Journal article

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

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.

    Keywords: SEMICONDUCTORS ; FEMTOSECOND ; OSCILLATIONS ; SYSTEM

    Note:

    Fed Inst Technol Lausanne, Dept Phys, PH Ecublens, EPFL, CH-1015 Lausanne, Switzerland. Univ Cagliari, Dipartimento Fis, Cagliari, Italy. Univ Cagliari, Ist Nazl Fis Mat, Cagliari, Italy. Saba, M, Fed Inst Technol Lausanne, Dept Phys, PH Ecublens, EPFL, CH-1015 Lausanne, Switzerland.

    ISI Document Delivery No.: 390QL

    Times Cited: 0

    Cited Reference Count: 18

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    Reference

    Record created on 2007-08-31, modified on 2016-08-08

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