Thulium fibre laser pumped mid-IR source

Ian Elder

doi:10.1117/12.818553

6 May 2009 Thulium fibre laser pumped mid-IR source

Ian Elder

Proceedings Volume 7325, Laser Technology for Defense and Security V; 73250I (2009) https://doi.org/10.1117/12.818553
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

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.

Citation Download Citation

Ian Elder "Thulium fibre laser pumped mid-IR source", Proc. SPIE 7325, Laser Technology for Defense and Security V, 73250I (6 May 2009); https://doi.org/10.1117/12.818553

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