Femtosecond and nanosecond laser removal of anodic oxide layers from aluminium

被引：6

作者：

Daminelli, G ^{[1
]}

Meja, P ^{[1
]}

Cortona, A ^{[1
]}

Krüger, J ^{[1
]}

Autric, M ^{[1
]}

Kautek, W ^{[1
]}

机构：

[1] Fed Inst Mat Res & Testing, Lab Thin Film Technol, D-12205 Berlin, Germany

来源：

HIGH-POWER LASER ABLATION IV, PTS 1 AND 2 | 2002年 / 4760卷

关键词：

laser ablation; laser spallation; microphone; acoustical measurement; aluminium oxide;

D O I：

10.1117/12.482091

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Femtosecond and nanosecond laser ablation and delamination of anodic oxide layers on an aluminium. alloy were investigated. Laser wavelengths of 800 nm (125 fs pulse duration) and 532 nm (7 ns), respectively, and two oxide layers with thicknesses of 70 mum (opaque) and 30 mum (transparent) were considered. Laser-induced shock waves measured by means of a microphone provided an in-situ diagnostic tool for the monitoring of the coating removal process. The transparent anodic oxides showed contrasting ablation mechanisms in the nanosecond and femtosecond pulse duration regime. Nanosecond pulses led to spallation, whereas femtosecond treatment resulted in ablation.

引用

页码：239 / 246

页数：8

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