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Pulse-on-demand operation for precise high-speed UV laser microstructuring
ID
Kočica, Jernej Jan
(
Author
),
ID
Mur, Jaka
(
Author
),
ID
Didierjean, Julien
(
Author
),
ID
Guillossou, Arnaud
(
Author
),
ID
Saby, Julien
(
Author
),
ID
Petelin, Jaka
(
Author
),
ID
Mincuzzi, Girolamo
(
Author
),
ID
Petkovšek, Rok
(
Author
)
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https://www.mdpi.com/2072-666X/14/4/843
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Abstract
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.
Language:
English
Keywords:
fiber lasers
,
UV lasers
,
nanosecond lasers
,
pulse-on-demand
,
material processing
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2023
Number of pages:
11 str.
Numbering:
Vol. 14, iss. 4, art. 843
PID:
20.500.12556/RUL-145314
UDC:
535:621.7+621.9
ISSN on article:
2072-666X
DOI:
10.3390/mi14040843
COBISS.SI-ID:
149330179
Publication date in RUL:
17.04.2023
Views:
469
Downloads:
70
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Record is a part of a journal
Title:
Micromachines
Shortened title:
Micromachines
Publisher:
Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:
2072-666X
COBISS.SI-ID:
523276825
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
vlakenski laserji
,
UV laserji
,
nanosekundni laserji
,
pulzi na zahtevo
,
obdelava materialov
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0270
Name:
Proizvodni sistemi, laserske tehnologije in spajanje materialov
Funder:
ARRS - Slovenian Research Agency
Project number:
L2-3171
Name:
Generacija ultrakratkih laserskih pulzov za zelo hitro in visoko prilagodljivo vzporedno mikro-procesiranje
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