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Conferences > OAM > 1988 > ME > ME1

High density femtosecond virtual excitations In dc-blased quantum well structures

Wayne H. Knox, Daniel S. Chemla, D. A. B. Miller, and J. B. Stark

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Abstract

Virtual excitation of semiconductors has been demonstrated to yield ultrafast optical nonlinearities.1 We report studies of the effects of virtual excitations in a quantum well structure biased by a dc field perpendicular to the layers. In such a sample, electrons and holes exhibit a quantum-confined Stark effect creating a real transition dipole. The interaction of an intense femtosecond light pulse which is below the energy threshold for real optical transitions with this system is the object of the present study.

© 1988 Optical Society of America

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