Picosecond Yb-doped tapered fiber laser system with 1.26 MW peak power and 200 W average output power

Petrov, Andrey; Odnoblyudov, Maxim; Gumenyuk, Regina; Minyonok, Lidiya; Chumachenko, Andrey; Filippov, Valery (2020)
 
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Petrov, Andrey
Odnoblyudov, Maxim
Gumenyuk, Regina
Minyonok, Lidiya
Chumachenko, Andrey
Filippov, Valery
2020

Scientific Reports
17781
doi:10.1038/s41598-020-74895-z
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https://urn.fi/URN:NBN:fi:tuni-202011047801

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Peer reviewed
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We demonstrate a compact picosecond master-oscillator power-amplifier (MOPA) system based on an Yb-doped polarization-maintaining double-clad tapered fiber (T-DCF) delivering pulses with over 1.26 MW peak power and average output power up to 200 W preserving near diffraction limited beam quality. The unique properties of an active tapered fiber enable to amplify the seed pulses directly with no need for applying of additional stretching technique. This simplified laser system can find the practical implementation in industrial micromachining.
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