Abstract
The excitation of a dense electron-hole plasma by an ultrashort intense laser pulse opens the possibility of studying characteristic manybody effects under nonequilibrium conditions. Such an optical pump experiment can be described by solving the semiconductor Bloch equations. Mostly they are solved with use of simplified approximations for the description of the many-body effects (band gap shift, screening) that determine the different scattering processes between carriers and the laser-induced coherent polarization such as, e.g., a dc phasing rate approximation1 or static sc reciting.2
© 1997 Optical Society of America
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