17 May 2018 High-energy subpicosecond 2 μm fiber laser
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Abstract
Hi-tech industrial or biotechnological laser applications request for picosecond pulsed 2-μm laser generating sub-1-J pulses in >kHz repetition range. At HiLASE center the development of the laser system with target to generate 1-J picosecond pulses with 1-kHz repetition rate has started. In this paper, we present a concept of the laser system and demonstrate recent results from the first part of the laser – the holmium fiber oscillator. The holmium fiber front-end is pumped by a continuous wave <1-W thulium fiber laser generating at wavelength of 1950-nm. Mode-locking operation in the oscillator is reached by dispersion management in the laser cavity. In this self-starting configuration we reached 45-mW of average power with repetition rate of 22.5-MHz with pulse energy of 2-nJ.
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Jitka Černohorská, Jitka Černohorská, Michael Písařík, Michael Písařík, Pavel Peterka, Pavel Peterka, Jan Aubrecht, Jan Aubrecht, Reza Amani, Reza Amani, Ondřej Novák, Ondřej Novák, Martin Smrž, Martin Smrž, Michal Jelínek, Michal Jelínek, Antonio Lucianetti, Antonio Lucianetti, Akira Endo, Akira Endo, Tomáš Mocek, Tomáš Mocek, } "High-energy subpicosecond 2 μm fiber laser", Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 1068315 (17 May 2018); doi: 10.1117/12.2307478; https://doi.org/10.1117/12.2307478
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