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A diode pumped single rod Yb:YAG amplifier for pumping high repetition rate OPCPA was developed providing high energy nanosecond pulses with 20 Hz repetition rate. A ring–shaped resonator was built with a number of round trips controlled by a BBO Pockels cell. A module with stacks of laser diodes with a possibility to provide 5 kW peak power at 50 Hz for future upgrade was implemented in order to provide double-sided end pumping. Active cooling by thermoelectric cooler and flowing water, crystal’s undoped endcaps and housing architecture yielded in high gain and low lensing effect.
Conference Presentation
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Jan Bartoníček, Martin Fibrich, Jonathan Tyler Green, Petr Vlčák, Bedřich Rus, "High-gain diode pumped Yb:YAG amplifier with advanced thermal management for pumping high repetition rate OPCPA," Proc. SPIE 12864, Solid State Lasers XXXIII: Technology and Devices, 128640G (12 March 2024); https://doi.org/10.1117/12.3003055