TIME AND FREQUENCY-RESOLVED INTERSUBBAND SPECTROSCOPY OF QUANTUM-WELLSTRUCTURES

Authors
KAISER J SEILMEIER A
Citation
J. Kaiser et A. Seilmeier, TIME AND FREQUENCY-RESOLVED INTERSUBBAND SPECTROSCOPY OF QUANTUM-WELLSTRUCTURES, Physica status solidi. b, Basic research, 204(1), 1997, pp. 205-207
Citations number
3
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
204
Issue
1
Year of publication
1997
Pages
205 - 207
Database
ISI
SICI code
0370-1972(1997)204:1<205:TAFISO>2.0.ZU;2-A
Abstract
In a modulation-doped GaAs/AlxGa1-xAs quantum well structure electrons are excited from the lowest to higher subbands by a picosecond IR pul se. Transient intersubband absorption spectra taken with picosecond ti me resolution during the relaxation process reveal shifts of the broad intersubband absorption band due to dynamic changes of the band struc ture. The broad absorption profile, however, remains nearly unchanged indicating only weak inhomogeneous contributions to the linewidth.