Spin-sensitive bleaching and monopolar spin orientation in quantum wells.
Spin-sensitive bleaching of the absorption of far-infrared radiation has been observed in p-type GaAs/AlGaAs quantum well structures. The absorption of circularly polarized radiation saturates at lower intensities than that of linearly polarized light due to monopolar spin orientation in the first heavy-hole subband. Spin relaxation times of holes in p-type material in the range of tens of ps were derived from the intensity dependence of the absorption.
Ganichev
S D
SD
Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040 Regensburg, Germany.
Danilov
S N
SN
Bel'kov
V V
VV
Ivchenko
E L
EL
Bichler
M
M
Wegscheider
W
W
Weiss
D
D
Prettl
W
W