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2 October 2008 Thulium fibre laser pumped mid-IR laser
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Abstract
A simple scheme for efficient generation of mid-IR laser radiation is reported. Using a 50 W thulium fibre laser to pump a Q-switched Ho:YAG laser 27.3 W of average output power is achieved with an M2 of 1.5 (optical to optical conversion efficiency 65%) at a wavelength of 2.1 μm. The holmium laser is used to pump a ZGP OPO generating 12.6 W of average output power in the 3-5 μm waveband (optical to optical conversion efficiency 52%) with a worst case M2 of 2.7. These efficiencies were maintained at 25% and 50% duty cycle operation.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ian Elder "Thulium fibre laser pumped mid-IR laser", Proc. SPIE 7115, Technologies for Optical Countermeasures V, 711505 (2 October 2008); https://doi.org/10.1117/12.803643
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