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1 November 2024 High-pulse-energy Tm3+-doped photonic crystal fiber laser for nonlinear frequency conversion into the mid-IR
Julian Schneider, Hugo Lassiette, Dominik Lorenz, Patrick Forster, Dieter Panitzek, Jan Lautenschläger, Clément Romano, Marc Eichhorn, Christelle Kieleck
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Proceedings Volume PC13201, High-Power Lasers and Technologies for Optical Countermeasures II; PC1320106 (2024) https://doi.org/10.1117/12.3031761
Event: Security + Defence, 2024, Edinburgh, United Kingdom
Abstract
A nanosecond-pulsed Tm-doped fiber laser (TDFL) operating at 2050 nm is reported based on a flexible photonic crystal fiber with a core diameter of 50 μm. The TDFL delivers gaussian-shaped pulses with a maximum pulse energy of 1.9 mJ, corresponding to a peak power of 15.4 kW and a pulse width of 116 ns. The average output power of the pulsed TDFL is 114 W at a pulse repetition rate of 60 kHz. The measured output spectrum shows a single peak at 2050 nm with a 3-dB-linewidth of 130 pm and a 10-dB-linewidth of 370 pm. The TDFL serves as an excellent pump source for mid-IR generation through nonlinear-frequency conversion in optical parametric oscillators based on ZnGeP2.
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Julian Schneider, Hugo Lassiette, Dominik Lorenz, Patrick Forster, Dieter Panitzek, Jan Lautenschläger, Clément Romano, Marc Eichhorn, and Christelle Kieleck "High-pulse-energy Tm3+-doped photonic crystal fiber laser for nonlinear frequency conversion into the mid-IR", Proc. SPIE PC13201, High-Power Lasers and Technologies for Optical Countermeasures II, PC1320106 (1 November 2024); https://doi.org/10.1117/12.3031761
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KEYWORDS
Mid infrared
Fiber lasers
Photonic crystal fibers
Laser crystals
Nonlinear frequency conversion
Gaussian pulse
Laser countermeasures
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