Modeling of femtosecond laser damage threshold on the two-layer metal films

被引：65

作者：

Chen, A. M. ^{[1
]}

Xu, H. F. ^{[1
]}

Jiang, Y. F. ^{[1
]}

Sui, L. Z. ^{[1
]}

Ding, D. J. ^{[1
]}

Liu, H. ^{[1
]}

Jin, M. X. ^{[1
]}

机构：

[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2010年 / 257卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Two-layer film; Damage threshold; Laser heating; Electron temperature; Lattice temperature; Two-temperature model; ABLATION;

D O I：

10.1016/j.apsusc.2010.08.122

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The heating processes of the single-layer gold thin film and the two-layer film assembly of gold padded with other metal (silver, copper and nickel) irradiated by femtosecond laser pulse are studied by the two-temperature model. It is found that the substrate metal can change energy transport, which is corresponding to the temperature changing process, and the thermal equilibrium time. Compared with the single-layer gold film at the same laser fluence, the two-layer film structure can change the damage threshold of the gold surface. Our results indicate that we can maximize the damage threshold of the gold film surface by altering the thickness ratio of the gold layer and the substrate layer in the two-layer film assembly. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1678 / 1683

页数：6

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