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Pulse-on-demand operation for precise high-speed UV laser microstructuring [Elektronski vir]Kočica, Jernej Jan ...Laser microstructuring has been studied extensively in the last decades due to its versatile, contactless processing and outstanding precision and structure quality on a wide range of materials. A ... limitation of the approach has been identified in the utilization of high average laser powers, with scanner movement fundamentally limited by laws of inertia. In this work, we apply a nanosecond UV laser working in an intrinsic pulse-on-demand mode, ensuring maximal utilization of the fastest commercially available galvanometric scanners at scanning speeds from 0 to 20 m/s. The effects of high-frequency pulse-on-demand operation were analyzed in terms of processing speeds, ablation efficiency, resulting surface quality, repeatability, and precision of the approach. Additionally, laser pulse duration was varied in single-digit nanosecond pulse durations and applied to high throughput microstructuring. We studied the effects of scanning speed on pulse-on-demand operation, single- and multipass laser percussion drilling performance, surface structuring of sensitive materials, and ablation efficiency for pulse durations in the range of 1–4 ns. We confirmed the pulse-on-demand operation suitability for microstructuring for a range of frequencies from below 1 kHz to 1.0 MHz with 5 ns timing precision and identified the scanners as the limiting factor even at full utilization. The ablation efficiency was improved with longer pulse durations, but structure quality degraded.Source: Micromachines [Elektronski vir]. - ISSN 2072-666X (Vol. 14, iss. 4, 2023, str. 1-11)Type of material - e-article ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 149330179
Author
Kočica, Jernej Jan |
Mur, Jaka |
Didierjean, Julien |
Guillossou, Arnaud |
Saby, Julien |
Petelin, Jaka |
Mincuzzi, Girolamo |
Petkovšek, Rok, fizik
Topics
vlakenski laserji |
UV laserji |
nanosekundni laserji |
pulzi na zahtevo |
obdelava materialov |
fiber lasers |
UV lasers |
nanosecond lasers |
pulse-on-demand |
material processing
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kočica, Jernej Jan | 52343 |
Mur, Jaka | 37953 |
Didierjean, Julien | |
Guillossou, Arnaud | |
Saby, Julien | |
Petelin, Jaka | 35427 |
Mincuzzi, Girolamo | |
Petkovšek, Rok, fizik | 15646 |
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