Extraction of Many-Body Configurations from Nonlinear Absorption in Semiconductor Quantum Wells
Ryan P. Smith, Jared K. Wahlstrand, Andrew Funk +6 more
Detailed electronic many-body configurations are extracted from quantitatively measured time-resolved nonlinear absorption spectra of resonantly excited GaAs quantum wells. The microscopic theory assigns the observed spectral changes to a unique mixture of electron-hole plasma, exciton, and polarization effects. Strong transient gain is observed only under cocircular pump-probe conditions and is attributed to the transfer of pump-induced coherences to the probe.
arXiv:0912.2787•Physical Review Letters•Jun 15, 2010•56 citations