Title :
Influence of correlations on intensity dependent excitonic absorption changes
Author :
Meier, T. ; Koch, S.W. ; Brick, P. ; Ell, C. ; Khitrova, G. ; Gibbs, H.M.
Author_Institution :
Dept. of Phys. & Mater. Sci., Philipps-Univ., Marburg, Germany
Abstract :
Summary form only given. Polarization dependent excitonic absorption changes have been studied recently for excitation with weak pump pulses. It was shown, that for both resonant and off-resonant excitation even in the low-intensity /spl chi//sup (3)/-limit many-body Coulomb correlations strongly contribute to the optical response. We investigate, how the coherent pump-induced absorption changes vary with the pump intensity by analysing the next higher, i.e. the fifth-order contributions.
Keywords :
electron correlations; excitons; nonlinear optical susceptibility; optical pumping; time resolved spectra; Stark effect configuration; coherent pump-induced absorption changes; correlations influence; excitonic absorption changes; fifth-order contributions; intensity dependent changes; many-body Coulomb correlations; off-resonant excitation; optical response; polarization dependent changes; resonant excitation; weak pump pulse excitation; Absorption; Spectroscopy; USA Councils;
Conference_Titel :
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Conference_Location :
Nice, France
Print_ISBN :
0-7803-6318-3
DOI :
10.1109/IQEC.2000.908034
