期刊
METALS
卷 13, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/met13101775
关键词
two-temperature model; Fokker-Planck analytical approach; laser heating of metals; fs laser pulses; analytical simulations; beta parameter
The ultrafast fs laser pulse heating of thin metal films is studied for the first time using the two-temperature model based on the Fokker-Planck formalism. The predictions are intended for experimentalists in various fields who can benefit from the understanding of the interdependence between the target's size, the phonon/lattice characteristics, and the coefficient beta. The study highlights the importance of nano-sized spatial dimensions of the metal sample.
The ultrafast fs laser pulse heating of thin metal films is studied for the first time using the two-temperature model on the basis of the Fokker-Planck formalism. The incident laser radiation is multi-modal, while the electron temperature is described during the first 2 fs. The predictions are intended for use by experimentalists in optoelectronics, photonics, laser processing, electronics, and bio- and nanomedicine. The crucial role of the nano-sized spatial dimensions of the metal sample is highlighted. A significant result of this study is the interdependence between the target's size, the phonon/lattice characteristics, and the coefficient beta (the quotient of non-diffusive phenomena), which varies between zero (pure diffusive case) and one (pure non-diffusive case).
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