Abstract
This work is devoted to the electron temperature variation in metals through interaction with femtosecond laser pulses. Our study was inspired by the last mathematical breakthroughs regarding the exact analytical solutions of the heat equation in the case of flash laser-matter interaction. To this purpose, the classical Anisimov’s two temperature model was extended via the 3D telegraph Zhukovsky equation. Based upon this new approach, the computational plots of electron thermal fields during the first laser pulse interaction with a gold surface were inferred. It is shown that relaxation times and coupling factors over electron thermal conductivities (g/K) govern the interaction between the laser pulse and metal sample during the first picoseconds. The lower the factor g/K, the higher the electron temperature becomes. In contrast, the lower the relaxation time, the lower the electron temperature.
Highlights
During ultrashort laser pulse interaction with metals, the heat transfer proceeds in two steps
The main conclusion of this study is that using state-of-the-art mathematics, temperature model (TTM) still can provide
The main conclusion of this study is that using state-of-the-art mathematics, TTM still can pertinent thermal information in ultra-short laser pulse–metal interaction [14]
Summary
During ultrashort laser pulse interaction with metals, the heat transfer proceeds in two steps. The two temperature model (TTM) can predict the electron and lattice temperatures during the interaction of ultrashort laser pulses (
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