On the experimental evidence of nonlinear ablation mechanism of $TeO_2$ due to intense femtosecond laser pulse

Abstract

This study deals with the problem of ultrashort laser pulse damage of $TeO_2$ crystals. The laser wavelength dependent quantum energy lies in the almost transparent region of paratellurite, therefore the laser energy deposit occurs through nonlinear mechanism of multiphoton absorption of material. The time and position dependent optical breakdown is considered while the ($N_z$) in that case is smaller than unity.