Ultrashort single-pulse laser ablation of stainless steel, aluminium, copper and its dependence on the pulse duration

被引：43

作者：

Winter, Jan ^{[1
,2
]}

Spellauge, Maximilian ^{[1
]}

Hermann, Jens ^{[1
]}

Eulenkamp, Constanze ^{[1
]}

Huber, Heinz P. ^{[1
]}

Schmidt, Michael ^{[2
,3
]}

机构：

[1] Hsch Munchen Univ Appl Sci, D-80335 Munich, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91052 Erlangen, Germany

[3] Friedrich Alexander Univ Erlangen Nurnberg FAU, Inst Photon Technol LPT, Erlangen, Germany

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 10期

关键词：

MOLECULAR-DYNAMICS; PHASE EXPLOSION; METAL TARGETS; REMOVAL RATE; FEMTOSECOND; SURFACE; PICOSECOND; BURSTS; ELECTRON; SPALLATION;

D O I：

10.1364/OE.421097

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, we investigate single-pulse laser ablation of bulk stainless steel (AISI304), aluminium (Al) and copper (Cu) and its dependence on the pulse duration. We measured the reflectivity, ablation thresholds and volumes under the variation of pulse duration and fluence. The known drop of efficiency with increasing pulse duration is confirmed for single-pulse ablation in all three metals. We attribute the efficiency drop to a weakened photomechanically driven ablation process and a stronger contribution of photothermal phase explosion. The highest energetic efficiency and precision is achieved for pulse durations below the mechanical expansion time of 3-5 ps, where the stress confinement condition is fulfilled. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：14561 / 14581

页数：21

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