Thermal Lattice Field during Ultra-Short Laser Pulse Irradiation of Metal Targets: A Fokker-Planck Analytical Model

被引：2

作者：

Anghel, Sinziana-Andreea ^{[1
,2
]}

Oane, Mihai ^{[1
]}

Mihailescu, Cristian N. ^{[1
]}

Sava, Bogdan A. ^{[1
,3
]}

Elisa, Mihail ^{[4
]}

Mihailescu, Natalia ^{[1
]}

Ticos, Dorina ^{[1
]}

Trefilov, Alexandra M. I. ^{[1
]}

Ristoscu, Carmen ^{[1
]}

Filip, Ana V. ^{[1
]}

Mihailescu, Ion N. ^{[1
]}

机构：

[1] Natl Inst Laser Plasma & Radiat Phys INFLPR, Magurele 077125, Ilfov, Romania

[2] Univ Bucharest, Fac Phys, Magurele 077125, Ilfov, Romania

[3] Univ Politehn Bucuresti, Fac Appl Chem & Mat Sci, 313 Spl Independentei, Bucharest 060042, Romania

[4] Natl Inst R&D Optoelect, INOE 2000,409 Atomistilor Str, Magurele 077125, Ilfov, Romania

来源：

METALS | 2023年 / 13卷 / 10期

关键词：

two-temperature model; Fokker-Planck analytical approach; laser heating of metals; fs laser pulses; analytical simulations; beta parameter; FUNDAMENTALS;

D O I：

10.3390/met13101775

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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).

引用

页数：11

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