Analyses of self-focusing phenomenon and temperature rise in light absorption medium by ultrashort pulse laser irradiation

作者：Ohmura E^*

来源：Materialwissenschaft und Werkstofftechnik, 2013, 44(5): 472-480.

DOI：10.1002/mawe.201300152

• ultrashort pulse laser
• nonlinear optics
• self-focusing
• laser absorption
• heat transfer analysis

In this study, a paraxial wave equation including light absorption term was solved by numerical calculation using the fast Fourier transform for irradiation of a Kerr medium irradiated by an ultrashort pulse laser. Using the absorbed energy distribution as the initial condition, heat transfer analysis in the material was conducted. The influences of the nonlinear index intensity coefficient and the absorption coefficient on the temperature distribution in the material were investigated.

• 出版日期2013-5