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Multi-GW, 100 fs thulium-doped fiber laser system for high-harmonic generation at high repetition rates

: Gebhardt, M.; Gaida, C.; Stutzki, F.; Klas, R.; Tschernajew, M.; Demmler, S.; Jauregui, C.; Rothhardt, J.; Limpert, J.; Tünnermann, A.


Institute of Electrical and Electronics Engineers -IEEE-:
Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference, CLEO/Europe-EQEC 2017 : 25-29 June 2017, Munich, Germany
Piscataway, NJ: IEEE, 2017
ISBN: 978-1-5090-6736-7
ISBN: 978-1-5090-6737-4
Conference on Lasers and Electro-Optics Europe (CLEO) <2017, Munich>
European Quantum Electronics Conference (EQEC) <2017, Munich>
Fraunhofer IOF ()

Intense, ultrafast laser systems with an emission wavelength at around 2 μm have become popular tools for many scientific research activities such as nonlinear frequency conversion into the long-wave mid-infrared as well as the soft X-ray spectral region, in order to address numerous subsequent applications. There is, however, a strong application-driven demand for an increase in photon-flux, i.e. repetition rate and average power, of the driving laser systems. Thulium-doped fiber lasers are an average-power scalable laser concept at around 2 μm emission wavelength. They have been demonstrated with >100 W average power and show great promise to deliver peak powers of several tens of GW. Another advantage is the large gain bandwidth offered by Tm-doped fused silica, spanning from 1.8-2 μm.