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

Sebastian Nyga; Bernd Jungbluth; Florian Elsen; Anika Röhrig; Hans-Dieter Hoffmann

doi:10.1117/12.2544222

28 February 2020 Picosecond laser source at 3.4 microns for laser material processing of polymers

Sebastian Nyga, Bernd Jungbluth, Florian Elsen, Anika Röhrig, Hans-Dieter Hoffmann

Proceedings Volume 11259, Solid State Lasers XXIX: Technology and Devices; 112590D (2020) https://doi.org/10.1117/12.2544222
Event: SPIE LASE, 2020, San Francisco, California, United States

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.

Citation Download Citation

Sebastian Nyga, Bernd Jungbluth, Florian Elsen, Anika Röhrig, and Hans-Dieter Hoffmann "Picosecond laser source at 3.4 microns for laser material processing of polymers", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112590D (28 February 2020); https://doi.org/10.1117/12.2544222

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