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  • Title: Second and third harmonic conversion of a kilowatt average power, 100-J-level diode pumped Yb:YAG laser in large aperture LBO.
    Author: Phillips JP, Banerjee S, Mason P, Smith J, Spear J, De Vido M, Ertel K, Butcher T, Quinn G, Clarke D, Edwards C, Hernandez-Gomez C, Collier J.
    Journal: Opt Lett; 2021 Apr 15; 46(8):1808-1811. PubMed ID: 33857075.
    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.
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