@article {264,
title = {FAR-INFRARED SATURATION SPECTROSCOPY OF A SINGLE SQUARE-WELL},
journal = {Semiconductor Science and Technology},
volume = {9},
number = {5},
year = {1994},
note = {Sherwin, Mark S/Q-4762-2017
Sherwin, Mark S/0000-0002-3869-1893; Markelz, Andrea/0000-0003-0443-4319
S
8th International Conference on Hot Carriers in Semiconductors
Aug 16-20, 1993
Oxford univ, oxford, england
Sci \& engn res council; royal soc; brit council; oxford univ
31},
month = {May},
pages = {627-629},
abstract = {
We have performed saturation spectroscopy measurements of the lowest intersubband transition in a single 400 angstrom GaAs/Al0.3Ga0.7As modulation-doped square quantum well. We couple intense tunable far-infrared radiation from the Santa Barbara free electron laser into our sample using an edge-coupling technique and measure absorption as a function of frequency and intensity. Saturation and frequency shifts in the absorption line are clearly observed. We attribute the frequency shifts to reductions in the many-body depolarization shift. From our preliminary measurements, we estimate the intersubband relaxation time to be 600 ps to within a factor of three.
}, isbn = {0268-1242}, doi = {10.1088/0268-1242/9/5S/061}, author = {Craig, K. and Felix, C. L. and Heyman, J. N. and Markelz, A. G. and Sherwin, M. S. and Campman, K. L. and Hopkins, P. F. and Gossard, A. C.} }