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Observation of optical precursors at pulse propagation in GaAs

Phys. Rev. A 44, R5353(R) – Published 1 November 1991
J. Aaviksoo, J. Kuhl, and K. Ploog


We have observed optical precursors by studying propagation of ultrashort optical pulses with a steeply rising and an exponentially decaying trailing edge through a 0.2-μm-thick GaAs crystal near the exciton resonance. The appearance of a fast pulse front—the precursor—independent of the detuning with respect to the resonance, was accompanied by a delayed main pulse. The delay of the main pulse varies with detuning in according with theoretical predictions.

DOI: http://dx.doi.org/10.1103/PhysRevA.44.R5353

  • Received 21 May 1991
  • Published in the issue dated November 1991

© 1991 The American Physical Society

Authors & Affiliations

J. Aaviksoo

  • Institute of Physics, Estonian Academy of Science, 202 400 Tartu, Estonia, U.S.S.R.

J. Kuhl and K. Ploog

  • Max-Planck-Institut für Festkörperforschung, D-7000 Stuttgart 80, Germany

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