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Fiber-coupled three-micron pulsed laser source for CFRP laser treatment

: Nyga, S.; Blass, D.; Katzy, V.; Westphalen, T.; Jungbluth, B.; Hoffmann, H.-D.


Clarkson, W.A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Solid State Lasers XXVII: Technology and Devices : 29 January - 1 February 2018, San Francisco, California, United States
Bellingham, WA: SPIE, 2018 (Proceedings of SPIE 10511)
ISBN: 978-1-5106-1508-3
ISBN: 978-1-5106-1507-6
Paper 105110G, 7 pp.
Conference "Solid State Lasers - Technology and Devices" <27, 2018, San Francisco/Calif.>
Conference "Laser Source Technologies, Industrial Lasers, and Applications" (LASE) <2018, San Francisco/Calif.>
Photonics West Conference <2018, San Francisco/Calif.>
Conference Paper
Fraunhofer ILT ()

We present a laser source providing up to 18 W and 1.5 mJ at a wavelength of 3 μm. The output is generated by frequency conversion of randomly polarized multimode radiation at 1064 nm of an Nd:YAG laser in a two-stage conversion setup. The frequency converter comprises an optical parametric oscillator and a subsequent optical parametric amplifier using PPLN as nonlinear medium in both stages. To implement fiber-based beam delivery for materials processing, we coupled the output at 3 μm to a multimode ZrF4-fiber. This source was then used to remove epoxy resin from the surface of CFRP samples.