[13a-B410-1~9] 3.7 Laser processing

[13a-B410-8] First-principles calculation of nonlinear optical absorption of crystalline solids with two-color laser fields

〇Kakeru Sasaki¹, Yasushi Shinohara¹, Kenichi Ishikawa¹ (1.Tokyo Univ.)

Keywords:Laser processing, Femtosecond laser, The nonlinear optical absorption

We have calculated Non-linear photon absorption using ab initio calculation when a two-color laser was irradiated to an insulator with a wide band gap. It was confirmed that the amount of energy absorption was higher when a two-color laser was mixed than when a single-color laser was used. In this talk, we report how the behavior of energy absorption changes under various laser intensities.