Coherent effects in pump-probe spectroscopy of excitons

Opt Lett. 1988 Apr 1;13(4):276-8. doi: 10.1364/ol.13.000276.


Femtosecond measurements of coherent effects arising from exciton bleaching in bulk GaAs are reported. This phenomenon, which is characterized by spectral oscillatory structures, is general and appears whenever the temporal resolution is shorter than the material coherence time. This is shown to be a manifestation of the uncertainty relation in time-resolved spectroscopy.