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

Zalesskaia, Iuliia; Motorin, Evgenii; Ustimchik, Vasilii; Lindner, Florian; Reichel, Volker; Wondraczek, Katrin; Lei, Yuhao; Kazansky, Peter G.; Gumenyuk, Regina; Filippov, Valery (2023)
 
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Zalesskaia, Iuliia
Motorin, Evgenii
Ustimchik, Vasilii
Lindner, Florian
Reichel, Volker
Wondraczek, Katrin
Lei, Yuhao
Kazansky, Peter G.
Gumenyuk, Regina
Filippov, Valery
Teoksen toimittaja(t)
Supradeepa, V. R.
SPIE
2023


Fiber Lasers XX
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doi:10.1117/12.2650118
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https://urn.fi/URN:NBN:fi:tuni-202401081154

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Peer reviewed
Tiivistelmä
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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