SIMULTANEOUS MEASUREMENT OF ELECTRON AND HOLE ESCAPE TIMES FROM BIASED SINGLE QUANTUM-WELLS

J A CAVAILLES, D A B MILLER, J E CUNNINGHAM, P L K WA, A MILLER

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)426-428
Number of pages3
JournalApplied Physics Letters
Volume61
Issue number4
Publication statusPublished - 27 Jul 1992

Cite this

CAVAILLES, J. A., MILLER, D. A. B., CUNNINGHAM, J. E., WA, P. L. K., & MILLER, A. (1992). SIMULTANEOUS MEASUREMENT OF ELECTRON AND HOLE ESCAPE TIMES FROM BIASED SINGLE QUANTUM-WELLS. Applied Physics Letters, 61(4), 426-428.