RELATIVE EFFICIENCY OF TRANSIENT AND STATIONARY CHANGES IN EXCITONIC OPTICAL-PROPERTIES OF INGAAS INP QUANTUM-WELLS/

Authors
CAMPI D CORIASSO C NISOLI M DESILVESTRI S
Citation
D. Campi et al., RELATIVE EFFICIENCY OF TRANSIENT AND STATIONARY CHANGES IN EXCITONIC OPTICAL-PROPERTIES OF INGAAS INP QUANTUM-WELLS/, Applied physics letters, 67(7), 1995, pp. 953-955
Citations number
11
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
67
Issue
7
Year of publication
1995
Pages
953 - 955
Database
ISI
SICI code
0003-6951(1995)67:7<953:REOTAS>2.0.ZU;2-Z
Abstract
Using an infrared tunable femtosecond source, we investigate the time evolution of exciton absorption bleaching in InGaAs/InP quantum wells at energies slightly below the exciton absorption peak at room tempera ture. We find that the bleaching due to photogenerated excitons can be stronger than that due to a thermal electron/hole plasma by a factor of 40. Numerical modeling, based on many-body theory, yields a qualita tive explanation of this unusual behavior, along with its density and spectral dependence as well. (C) 1995 American Institute of Physics.