The Physics in Applications of Ultrafast Lasers

被引:0
|
作者
Wortmann, Dirk [1 ]
Reininghaus, Martin [1 ]
Finger, Johannes [1 ]
Dold, Claus [3 ]
Russbueldt, Peter [2 ]
Poprawe, Reinhart [1 ,2 ]
机构
[1] Rhein Westfal TH Aachen, Chair Lasertechnol, Steinbachstr 15, Aachen, Germany
[2] Fraunhofer Inst Lasertech, Aachen, Germany
[3] Inspire AG, Zurich, Switzerland
来源
关键词
Ultrashort pulses; laser matter interaction; energy diffusion; heat accumulation; non-thermal ablation; FEMTOSECOND;
D O I
10.1117/12.911309
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
High precision and high throughput material processing using ultrashort pulsed laser radiation of high average power requires a detailed understanding of the laser matter interaction on ultrafast time scales. In this paper, we will focus on energy transport mechanisms based on the two-temperature-model and the resulting ablation regimes for single pulses. Heat accumulation at high pulse repetition rates and spatial pulse overlap will be discussed. Additional, a novel non-thermal ablation mechanism for graphite and corresponding materials will be presented.
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页数:6
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