https://doi.org/10.1051/epjconf/202226611014
High peak/average power picosecond pulsed MOPA system with tapered large mode area double-clad Yb-doped fiber
Ampliconyx Ltd, Lautakatonkatu 18, 33580 Tampere, Finland
* Corresponding author: valery.filippov@ampliconyx.com
Published online: 13 October 2022
In this paper, a high peak/average power picosecond pulsed master‑oscillator power‑amplifier (MOPA) system utilizing tapered large mode area double-clad fiber (T-DCF) is presented. In a high average power regime, we report a pulsed MOPA laser system with average power up to 613 W at 20 MHz repetition rate with 50 ps pulse duration (613 kW of peak power and 30.6 μJ pulse energy). In high peak power regime, over 3MW of peak power pulses (at seed source bandwidth) at 1 MHz repetition rate (310 μJ pulse energy and 310 W average) was demonstrated. The outstanding properties of T-DCF for amplification of laser signals to high power/energy levels with maintaining the excellent beam quality open a new horizon for advanced laser material processing.
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