Title

Investigation Of Excitonic Saturation By Time-Resolved Circular-Dichroism In Gaas-Alxga1-Xas Multiple-Quantum Wells

Authors

Authors

M. J. Snelling; P. Perozzo; D. C. Hutchings; I. Galbraith;A. Miller

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Phys. Rev. B

Keywords

SPIN-RELAXATION; OPTICAL NONLINEARITIES; EXCITED SEMICONDUCTORS; HETEROSTRUCTURES; Physics, Condensed Matter

Abstract

Time- and wavelength-resolved circular dichroism of the excitonic saturation in GaAs-AlxGa1-xAs multiple quantum wells at room temperature is investigated using a degenerate excite-probe method. For moderate excitation, the effects of photogenerated carriers on the heavy-hole exciton resonance are separately identified as the contributions of phase-space filling and Coulombic effects (screening and line-shape broadening). These contributions are observed to be of a similar magnitude. The induced circular dichroism of the exciton saturation was observed to decay with a time constant of 50 ps, which is attributable to electron spin relaxation.

Journal Title

Physical Review B

Volume

49

Issue/Number

24

Publication Date

1-1-1994

Document Type

Article

DOI Link

http://dx.doi.org/10.1103/PhysRevB.49.17160

Language

English

First Page

17160

Last Page

17169

WOS Identifier

WOS:A1994NW02700030

ISSN

0163-1829

Recommended Citation

"Investigation Of Excitonic Saturation By Time-Resolved Circular-Dichroism In Gaas-Alxga1-Xas Multiple-Quantum Wells" (1994). Faculty Bibliography 1990s. 2974.
https://stars.library.ucf.edu/facultybib1990/2974