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  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper WAA4

Temporal response of carrier transport nonlinearities in multiple quantum well structures

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Abstract

Optical nonlinearities arising from the saturation of excitonic absorption and the electric field-induced quantum confined Stark effect are used to monitor optically created excess carrier dynamics in GaAs/AlGaAs MQW structures on picosecond time scales. Excite-probe and transient grating measurements were carried out both with and without applied electrical bias at room temperature. These measurements give time constants for cross-well transport by carrier heating, thermionic emission from the wells, and tunneling through the barriers.

© 1989 Optical Society of America

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