Laser-based material interactions and ablation processes by bursts of 70 ps pulses

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

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.

• Language: English
• Keywords: laser processing, bursts of pulses, surface engineering, laser ablation
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: Str. 22868-22882
• Numbering: Vol. 29, no. 15, art. 428704
• PID: 20.500.12556/RUL-128281
• UDC: 621.9.048.7
• ISSN on article: 1094-4087
• DOI: 10.1364/OE.428704
• COBISS.SI-ID: 69644547

Copyright

V članku navedeno: "© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement: https://www.osapublishing.org/library/license_v1.cfm#VOR-OA (8.7.2021)"

• Publication date in RUL: 08.07.2021

Record is a part of a journal

• Title: Optics express
• Shortened title: Opt. express
• Publisher: Optica
• ISSN: 1094-4087
• COBISS.SI-ID: 8636438

Secondary language

• Language: Slovenian
• Keywords: laserska obdelava, paketi pulzov, površinski pojavi, laserska ablacija

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: L2-9240
• Name: Ultrakratki laserski pulzi na zahtevo

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0270
• Name: Proizvodni sistemi, laserske tehnologije in spajanje materialov