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Coulomb Quantum Kinetics for Semiconductor Femtosecond Spectroscopy
Author(s) -
Haug H.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<179::aid-pssb179>3.0.co;2-6
Subject(s) - femtosecond , femtochemistry , phonon , spectroscopy , semiconductor , four wave mixing , physics , coulomb , atomic physics , plasmon , laser , condensed matter physics , kinetics , scattering , materials science , optics , optoelectronics , nonlinear optics , quantum mechanics , electron
In resonant femtosecond spectroscopy of semiconductors the periods of the optical lattice vibrations and of the plasma oscillations are typically longer than the width of the laser pulses. Therefore the phonon and Coulomb scattering kinetics has to be described by the delayed quantum kinetics. The combined screening of both interactions is reviewed giving rise to non‐equilibrium mixed phonon–plasmon modes. Applications of this theory to the analysis of femtosecond differential transmission (DTS) and four‐wave mixing (FWM) experiments are discussed. Finally, the mixed mode picture is used to explain the findings of recent resonant coherent control experiments by Wegener et al.