Femtosecond heating of metals and terahertz generation in damaging regimes

摘要

We report on the observation of terahertz (THz) signal during the femtosecond laser ablation of metals. Strong correlation between the regimes of ablation and THz generation was found for different metals (copper, zinc, nickel and others). According to previous results, the interconnection of these two effects is caused by their thermal nature.