摘要
A dynamical theory of spectroscopy with femtosecond pulse excitation is developed and is applied to studying the one-photon absorption and two-photon emission processes.Unlike the previous theories,this theory can treat all kinds of optical process from ultrashort pulse to CW limit in a consistent picture,because the exact equation of emission rate obtained from this theory can correctly reduce to the Kramers-Heisenberg-Dirac (KHD) expression.
A dynamical theory of spectroscopy with femtosecond pulse excitation is developed and is applied to studying the one-photon absorption and two-photon emission processes.Unlike the previous theories,this theory can treat all kinds of optical process from ultrashort pulse to CW limit in a consistent picture,because the exact equation of emission rate obtained from this theory can correctly reduce to the Kramers-Heisenberg-Dirac (KHD) expression.