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Femtosecond-scale response of GaAs to ultrafast laser pulses RID A-7793-2008
(American Physical Society, 2002)
We present nonadiabatic simulations of the coherent response of crystalline GaAs irradiated by intense femtosecond-scale laser pulses. Above a threshold fluence, which corresponds to promotion of about 12% of the valence ...
Second-order susceptibility from a tight-binding Hamiltonian
(American Physical Society, 1998)
Using a new formalism that modifies a tight-binding Hamiltonian to include interaction with a time-dependent electromagnetic field, we have obtained an analytical expression for the second-order susceptibility. This ...