Polarization dependent quantum beats of homogeneously broadened excitons.
The polarization dependence of quantum beats from the A-exciton and the B-exciton in a GaN sample of exceptional quality is studied with four-wave mixing experiments. When changing the incident polarizations from collinear to crossed linear, a pi-phase shift of the beats is observed while the decay rate remains unchanged. This confirms previous theoretical predictions.
T
T
Aoki
G
G
Mohs
T
T
Ogasawara
R
R
Shimano
M
M
Kuwata-Gonokami
A
A
Yamaguchi