One-kilowatt boost for manufacturing with the ultra-short pulse laser

Performance wish fulfilled One-kilowatt boost for manufacturing with the ultra-short pulse laser

2024-10-01 Source: Fraunhofer-ILT | Translated by AI 3 min Reading Time

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With a new ultra-short pulse laser source designed for industrial use by Trumpf, the application spectrum of ultra-short pulse laser processing will significantly expand.

Here we are looking at something that the industry has been eagerly anticipating for a long time in terms of ultra-short pulse laser processing, as emphasized by Trumpf and the Fraunhofer-ILT. With the Trumicro 9000, the first one-kilowatt ultra-short pulse laser is being put into application. The researchers will test it.(Image: Fraunhofer-ILT / R. Baumgarten) — Here we are looking at something that the industry has been eagerly anticipating for a long time in terms of ultra-short pulse laser processing, as emphasized by Trumpf and the Fraunhofer-ILT. With the Trumicro 9000, the first one-kilowatt ultra-short pulse laser is being put into application. The researchers will test it.
(Image: Fraunhofer-ILT / R. Baumgarten)

Within the Fraunhofer CAPS cluster, researchers aim to determine how high-performance beam sources can expand the application spectrum of ultra-short pulse (UKP) laser material processing. A team will systematically investigate this question over the next few months, focusing on Trumpf's new UKP beam source that brings a median laser power of one kilowatt into play. As part of a bilateral cooperation, the laser experts from Ditzingen are providing the Fraunhofer Institute for Laser Technology (ILT) with the new Trumicro 9000. This beam source's foray into the kilowatt range offers multiple times the median power of the currently most powerful UKP lasers for industrial use, as emphasized. Its pulse energy of 10 millijoules also significantly exceeds current levels. With a pulse duration of under 900 femtoseconds, numerous burst options, very high beam quality (M² < 1.3), alongside high flexibility at various working points and the operating standards typical of Trumpf industrial lasers, this laser system has the potential to trigger the productivity boost in UKP material processing that many users have been waiting for. For the first time, ILT researchers explain, a kilowatt beam source is available that performs like established UKP industrial lasers in the 200-watt class. The focus will be on identifying which process management strategies and system configurations can optimally utilize the high median power for processing the respective workpieces.

Performance boost through the combination of known elements...

By combining tried-and-tested Trumpf components in the amplifier chain, it has been possible to significantly increase both the maximum single pulse energy and the resulting average power. According to Trumpf, the new beam source achieves the typical UKP beam quality of ultra-short pulse lasers despite its high power because the developers were able to draw on a comprehensive wealth of experience based on various power classes, each underpinned by different amplifier technologies, including fiber, disk, and slab amplifiers. In addition to this diversity within the UKP portfolio, insights from the development of components for continuous wave (CW) and short pulse lasers also contribute. Thus, the main amplifier of the new Trumicro 9000—a so-called multi-pass cell—was originally used for amplifying nanosecond pulses in the power range of three kilowatts. Transferring such tested components to the UKP beam source has ensured that it meets industrial requirements from the outset.

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Performance wish fulfilled One-kilowatt boost for manufacturing with the ultra-short pulse laser

Performance boost through the combination of known elements...

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