Title :
Femtosecond dynamic exciton bleaching in room temperature II-VI quantum wells
Author :
Becker, Philippe C. ; Lee, Donghan ; Barros, M.R.X.d. ; Johnson, Anthony M. ; Prosser, Alan G. ; Feldman, Robert D. ; Austin, Richard F. ; Behringer, Robert E.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
Femtosecond optical pulses of 14-fs duration were used to investigate exciton dynamics in II-VI CdZnTe-ZnTe multiple quantum wells, at room temperature. An exciton ionization time of 110 fs was determined. The bleaching strength of `cold´ neutral excitons on excitons is found to be larger than that from the same density of `cool´ free electron-hole pairs
Keywords :
II-VI semiconductors; cadmium compounds; excitons; interface electron states; optical saturable absorption; semiconductor quantum wells; zinc compounds; 110 fs; 14 fs; CdZnTe-ZnTe; CdZnTe-ZnTe multiple quantum wells; bleaching strength; cold neutral excitons; dynamic exciton bleaching; exciton ionization time; femtosecond optical pulses; room temperature II-VI quantum wells; Bleaching; Excitons; Ionization; Laser mode locking; Nonlinear optics; Optical scattering; Quantum well devices; Quantum well lasers; Temperature; Ultrafast optics;
Journal_Title :
Quantum Electronics, IEEE Journal of
