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.
WOS:000166307800028
2000
62
24
R16322
R16325
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
Cited Reference Count: 18
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