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Proceedings Paper

Picosecond laser source at 3.4 microns for laser material processing of polymers
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Paper Abstract

We present a laser beam source with average output powers of up to 15 W and pulse energies of up to 50 μJ at a wavelength of 3.4 μm based on a frequency converted ultrashort pulse laser. The laser beam source consists of a commercially available ultrashort pulse laser with a pulse duration of 10 ps and a downstream multi-stage optical parametric frequency converter based on large-aperture PPLN crystals. Different output powers, pulse energies, conversion efficiencies and beam qualities are achieved depending on the design of the multi-stage setup. In addition, we present some results of processing experiments on different polymer films obtained with the laser beam source presented here.

Paper Details

Date Published: 28 February 2020
PDF: 7 pages
Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112590D (28 February 2020); doi: 10.1117/12.2544222
Show Author Affiliations
Sebastian Nyga, Fraunhofer-Institut für Lasertechnik ILT (Germany)
Bernd Jungbluth, Fraunhofer-Institut für Lasertechnik ILT (Germany)
Florian Elsen, Fraunhofer-Institut für Lasertechnik ILT (Germany)
Anika Röhrig, Fraunhofer-Institut für Lasertechnik ILT (Germany)
Hans-Dieter Hoffmann, Fraunhofer-Institut für Lasertechnik ILT (Germany)

Published in SPIE Proceedings Vol. 11259:
Solid State Lasers XXIX: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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