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Opt Express. 2012 Apr 23;20(9):9698-704. doi: 10.1364/OE.20.009698.

Mode-locked Yb:YAG thin-disk oscillator with 41 µJ pulse energy at 145 W average infrared power and high power frequency conversion.

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  • 1Department of Physics and Center of Applied Photonics, University of Konstanz, 78465 Konstanz, Germany. dominik.bauer@de.trumpf.com


We demonstrate the generation of 1.1 ps pulses containing more than 41 µJ of energy directly out of an Yb:YAG thin-disk without any additional amplification stages. The laser oscillator operates in ambient atmosphere with a 3.5 MHz repetition rate and 145 W of average output power at a fundamental wavelength of 1030 nm. An average output power of 91.5 W at 515 nm was obtained by frequency doubling with a conversion efficiency exceeding 65%. Third harmonic generation resulted in 34 W at 343 nm at 34% efficiency.

© 2012 Optical Society of America

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