Paper
12 March 2024 12.2 W ZGP OPO pumped by a Q-Switched Tm3+:Ho3+-codoped fiber laser
Patrick Forster, Jan Lautenschläger, Dominik Lorenz, Julian Schneider, Dieter Panitzek, Clément Romano, Marc Eichhorn, Christelle Kieleck
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Abstract
We present our latest results in power scaling of Midwave-Infrared (MWIR) Optical Parametric Oscillators (OPOs) based on a Zinc Germanium Phosphide (ZGP) crystal, utilizing a single oscillator fiber laser as pump source. To obtain a compact and complexity-reduced pump source emitting at ≥ 2.09 μm, a Q-switched Tm3+:Ho3+- codoped fiber laser was developed. Based on this pump source at an emission wavelength of 2.1 μm, we achieved an MWIR output power of 12.2W with pulse energies of up to 270 μJ and a conversion efficiency exceeding 43 %. This result exceeds the published power records of ZGP-based OPOs pumped by 2 μm Q-switched fiber lasers by 50 % and sets a new benchmark for average power scaling and pulse energy of Q-switched pump sources.
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick Forster, Jan Lautenschläger, Dominik Lorenz, Julian Schneider, Dieter Panitzek, Clément Romano, Marc Eichhorn, and Christelle Kieleck "12.2 W ZGP OPO pumped by a Q-Switched Tm3+:Ho3+-codoped fiber laser", Proc. SPIE 12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, 1286905 (12 March 2024); https://doi.org/10.1117/12.3002253
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KEYWORDS
Optical parametric oscillators

Fiber lasers

Mid-IR

Q switched lasers

Holmium

Pulsed laser operation

Thulium

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