Modelling of ultrashort laser ablation of gold films in vacuum

被引：91

作者：

Chen, JK ^{[1
]}

Beraun, JE ^{[1
]}

机构：

[1] USAF, Res Lab, Laser Effects Res Branch, Directed Energy Directorate, Kirtland AFB, NM 87117 USA

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2003年 / 5卷 / 03期

关键词：

ultrashort-pulse laser; material ablation; phase explosion; superheating; two-step heating;

D O I：

10.1088/1464-4258/5/3/304

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on the concept of phase explosion, an enthalpy form of the two-step heating equations is proposed to model the superheating and material ablation of metals caused by ultrashort-pulse lasers. Numerical calculation of the electron and lattice temperatures is performed for gold films heated by a sub-picosecond UV laser in vacuum. When the lattice temperature at a material point equals 0.9T(tc) (T-tc denoting the thermodynamic equilibrium critical temperature), phase explosion is assumed and that material point is removed. The calculated ablation depth matches well with experimental data.

引用

页码：168 / 173

页数：6

共 35 条

[1]

Anisimov S. I., 1975, SOV PHYS JETP, V39, P375, DOI DOI 10.1016/J.JMATPROTEC.2009.05.031

[2] On the theory of ultrashort laser pulse interaction with a metal [J].

Anisimov, SI ;

Rethfeld, B .

NONRESONANT LASER-MATTER INTERACTION (NLMI-9), 1997, 3093 :192-203

[3] Ultrashort-pulse laser ablation of indium phosphide in air [J].

Bonse, J ;

Wrobel, JM ;

Krüger, J ;

Kautek, W .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2001, 72 (01) :89-94

[4] Phase explosion under ultrashort pulsed laser ablation: modeling with analysis of metastable state of melt [J].

Bulgakova, NM ;

Bourakov, IM .

APPLIED SURFACE SCIENCE, 2002, 197 :41-44

[5] Pulsed laser ablation of solids: transition from normal vaporization to phase explosion [J].

Bulgakova, NM ;

Bulgakov, AV .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2001, 73 (02) :199-208

[6] Modeling of femtosecond laser-induced non-equilibrium deformation in metal films [J].

Chen, JK ;

Beraun, JE ;

Grimes, LE ;

Tzou, DY .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2002, 39 (12) :3199-3216

[7] Numerical study of ultrashort laser pulse interactions with metal films [J].

Chen, JK ;

Beraun, JE .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2001, 40 (01) :1-20

[8] Laser-induced explosive boiling during nanosecond laser ablation of silicon [J].

Craciun, V ;

Bassim, N ;

Singh, RK ;

Craciun, D ;

Hermann, J ;

Boulmer-Leborgne, C .

APPLIED SURFACE SCIENCE, 2002, 186 (1-4) :288-292

[9] Hydrodynamic simulation of subpicosecond laser interaction with solid-density matter [J].

Eidmann, K ;

Meyer-ter-Vehn, J ;

Schlegel, T ;

Hüller, S .

PHYSICAL REVIEW E, 2000, 62 (01) :1202-1214

[10] Ablation of solids by femtosecond lasers: Ablation mechanism and ablation thresholds for metals and dielectrics [J].

Gamaly, EG ;

Rode, AV ;

Luther-Davies, B ;

Tikhonchuk, VT .

PHYSICS OF PLASMAS, 2002, 9 (03) :949-957

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