Title

Simultaneous Measurement Of Electron And Hole Escape Times From Biased Single Quantum-Wells

Keywords

Saturation; Physics, Applied

Abstract

Picosecond pump probe measurements on waveguides containing a single GaAs/GaAlAs quantum well have enabled us to determine for the first time both electron and hole escape times from biased quantum wells. Contributions from excitonic saturation and field screening by photogenerated carriers can be clearly identified in the nonlinear transition signal and are quantitatively modeled. Preliminary analysis suggests that thermally assisted escape is dominant at room temperature, but discrepancies are found with conventional thermionic emission models.

Publication Title

Applied Physics Letters

Volume

61

Issue/Number

4

Publication Date

1-1-1992

Document Type

Article

Language

English

First Page

426

Last Page

428

WOS Identifier

WOS:A1992JE82100019

ISSN

0003-6951

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