Radially polarized picosecond MOPA system based on double-clad ytterbium-doped spun tapered fiber with ring-shaped active core

Iuliia Zalesskaia; Evgenii Motorin; Vasilii Ustimchik; Florian Lindner; Volker Reichel; Katrin Wondraczek; Yuhao Lei; Peter G. Kazansky; Regina Gumenyuk; Valery Filippov

doi:10.1117/12.2650118

8 March 2023 Radially polarized picosecond MOPA system based on double-clad ytterbium-doped spun tapered fiber with ring-shaped active core

Iuliia Zalesskaia, Evgenii Motorin, Vasilii Ustimchik, Florian Lindner, Volker Reichel, Katrin Wondraczek, Yuhao Lei, Peter G. Kazansky, Regina Gumenyuk, Valery Filippov

Author Affiliations +

Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 124001C (2023) https://doi.org/10.1117/12.2650118
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We have demonstrated for the first time, to the best of our knowledge, the successful direct amplification of a cylindrical-vector beams with axially symmetric polarization and doughnut-shaped intensity profile in picosecond MOPA system based on a double-clad ytterbium-doped spun tapered fiber with a ring-shaped active core. The output radially polarized beam with absolute contrast between bright and dark zones carries 10 ps pulses at 1030 nm with a 14.5 W average power level, 91 kW peak power and 0.97 μJ pulse energy.

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Iuliia Zalesskaia, Evgenii Motorin, Vasilii Ustimchik, Florian Lindner, Volker Reichel, Katrin Wondraczek, Yuhao Lei, Peter G. Kazansky, Regina Gumenyuk, and Valery Filippov "Radially polarized picosecond MOPA system based on double-clad ytterbium-doped spun tapered fiber with ring-shaped active core", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 124001C (8 March 2023); https://doi.org/10.1117/12.2650118

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