ULTRAFAST EXCITON SPIN RELAXATION IN GAAS ALGAAS AND CDMNTE MULTIPLE-QUANTUM WELLS/

Authors
TAKAGI Y ADACHI S TAKEYAMA S TACKEUCHI A MUTO S DUBOWSKI JJ
Citation
Y. Takagi et al., ULTRAFAST EXCITON SPIN RELAXATION IN GAAS ALGAAS AND CDMNTE MULTIPLE-QUANTUM WELLS/, Journal of luminescence, 58(1-6), 1994, pp. 202-205
Citations number
4
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
58
Issue
1-6
Year of publication
1994
Pages
202 - 205
Database
ISI
SICI code
0022-2313(1994)58:1-6<202:UESRIG>2.0.ZU;2-B
Abstract
We report on the direct observation of ultrafast spin relaxation of bo th the heavy-hole and the light-hole excitons in GaAs/AlGaAs multiple quantum wells (MQW) at room temperature using the femtosecond absorpti on bleaching detection. Also, we report on the time-resolved reflectio n measurements in CdMnTe MQW. A variety of polarization-dependent and wavelength-dependent time profiles are observed in the picosecond time region.