14 W linear ZGP OPO pumped by a Q-switched Ho3+:YAG laser with a maximum energy of 2.2 mJ

Katharina Goth; Madeleine Eitner; Michael Griesbeck; Marius Rupp; Johannes Deutsch; Marc Eichhorn; Christelle Kieleck

doi:10.1117/12.2692202

12 March 2024 14 W linear ZGP OPO pumped by a Q-switched Ho³⁺:YAG laser with a maximum energy of 2.2 mJ

Katharina Goth, Madeleine Eitner, Michael Griesbeck, Marius Rupp, Johannes Deutsch, Marc Eichhorn, Christelle Kieleck

Proceedings Volume 12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII; 1286906 (2024) https://doi.org/10.1117/12.2692202
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

We present a Ho³⁺:YAG laser source and use it to pump a linear ZGP OPO with a novel design intended to improve the mode matching properties of the resonator. Beam quality measurements are used to evaluate the performance of the novel design in comparison with a conventional linear resonator. Operated at 25 kHz repetition rate, the Ho³⁺:YAG laser delivers 2.2 mJ, 20 ns Q-switched pulses. This results in a pulse peak power of 108 kW while the average output power is 58W. In the optimal ZGP OPO configuration, 14.1W of signal and idler output power are achieved with a conversion efficiency of 49.8 % with respect to the absorbed pump power. A clearly improved beam quality of 2.1 and 3.3 (2.4 and 3.5) in the x- and y-axis of the signal (idler) beam compared to the conventional linear resonator is shown.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Katharina Goth, Madeleine Eitner, Michael Griesbeck, Marius Rupp, Johannes Deutsch, Marc Eichhorn, and Christelle Kieleck "14 W linear ZGP OPO pumped by a Q-switched Ho³⁺:YAG laser with a maximum energy of 2.2 mJ", Proc. SPIE 12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, 1286906 (12 March 2024); https://doi.org/10.1117/12.2692202

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