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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Second and third harmonic conversion of a kilowatt average power, 100-J-level diode pumped Yb:YAG laser in large
Optics Letters
|April 15, 2021
Abstract:
We report on the successful demonstration of second and third harmonic conversion of a high pulse energy, high average power 1030 nm diode pumped Yb-doped yttrium aluminum garnet (Yb:YAG) nanosecond pulsed laser in a large aperture lithium triborate (LBO) crystal. We demonstrated generation of 59.7 J at 10 Hz (597 W) at 515 nm (second harmonic) and of 65.0 J at 1 Hz (65 W) at 343 nm (third harmonic), with efficiencies of 66% and 68%, respectively. These results, to the best of our knowledge, represent the highest energy and power reported for frequency conversion to green and UV-A wavelengths.
