First-principles electron dynamics simulation study of high intensity laser irradiation on crystal systems: Photon energy dependent energy transfer.

Nonlinear interaction between femtosecond laser pulse and simple dielectric solid, silicon, at an intensity range around the damage threshold has been investigated by first-principles calculations based on time-dependent density functional theory (TDDFT). Intensity and frequency dependences are discussed making comparison with the Keldysh theory. [ABSTRACT FROM AUTHOR]