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16 March 2016 Recent development of disk lasers at TRUMPF
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Abstract
The disk laser is one of the most important laser concepts for today’s industrial laser market. Offering high brilliance at low cost, high optical efficiency and great application flexibility the disk laser paved the way for many industrial laser applications. Over the past years power and brightness increased and the disk laser turned out to be a very versatile laser source, not only for welding but also for cutting. Both, the quality and speed of cutting are superior to CO2-based lasers for a vast majority of metals, and, most important, in a broad thickness range. In addition, due to the insensitivity against back reflections the disk laser is well suited for cutting highly reflective metal such as brass or copper. These advantages facilitate versatile cutting machines and explain the high and growing demand for disk lasers for applications besides welding applications that can be observed today. From a today’s perspective the disk principle has not reached any fundamental limits regarding output power per disk or beam quality, and offers numerous advantages over other high power resonator concepts, especially over fiber lasers or direct diode lasers. This paper will give insight in the latest progress in kilowatt class cw disk laser technology at TRUMPF and will discuss recent power scaling results as well.
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Sven-Silvius Schad, Tina Gottwald, Vincent Kuhn, Matthias Ackermann, Dominik Bauer, Michael Scharun, and Alexander Killi "Recent development of disk lasers at TRUMPF", Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 972615 (16 March 2016); https://doi.org/10.1117/12.2212789
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