Jernej Jan Kočica (Author), Jaka Mur (Author), Jaka Petelin (Author), Rok Petkovšek (Author)

Abstract

The intermediate pulse duration regime between typical ultra-short and nanosecond pulses has been investigated using MHz-range bursts of 70 ps pulses emitted from a custom-made fiber laser source. The goal of this study was to observe and understand the processes involved during laser ablation on the timescales from picoseconds to nanoseconds, relevant due to pulses in bursts. We developed material processing approaches that enable similar behaviour as single 70 ps pulse ablation to ultra-short pulses in terms of quality and burst-mode behaviour like nanosecond pulses in terms of efficiency. The variability of the fiber laser operation modes was studied and compared to both ultra-short and nanosecond pulses from standard laser sources.

Keywords

laser processing;bursts of pulses;surface engineering;laser ablation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.9.048.7
COBISS: 69644547 Link will open in a new window
ISSN: 1094-4087
Views: 513
Downloads: 172
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Other data

Secondary language: Slovenian
Secondary keywords: laserska obdelava;paketi pulzov;površinski pojavi;laserska ablacija;
Type (COBISS): Article
Pages: str. 22868-22882
Volume: ǂVol. ǂ29
Issue: ǂno. ǂ15
Chronology: Jul. 2021
DOI: 10.1364/OE.428704
ID: 13116263