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The first higher power 3.5 μm pumping technique. Initial rapid power scaling has stagnated with no higher average power results in recent years. Power levels in excess of 10 W are necessary to unlock industrial and defense applications. Utilizing our rate equation based numerical model we investigate the expected performance of 3.5 μm fiber lasers configurations operating on the 10 W-20 W range. Fiber geometries and pump configurations are investigated. We also compare resonator with the simulated performance of master-oscillator power amplifiers configuration as a potential alternative for power scaling.
Ori Henderson-Sapir,Deeksha Beniwal, andDavid J. Ottaway
"Numerical optimization of high power 3.5 μm erbium-doped mid-infrared fiber laser and amplifiers", Proc. SPIE 11981, Fiber Lasers XIX: Technology and Systems, 1198116 (4 March 2022); https://doi.org/10.1117/12.2608192
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Ori Henderson-Sapir, Deeksha Beniwal, David J. Ottaway, "Numerical optimization of high power 3.5 μm erbium-doped mid-infrared fiber laser and amplifiers," Proc. SPIE 11981, Fiber Lasers XIX: Technology and Systems, 1198116 (4 March 2022); https://doi.org/10.1117/12.2608192