7 March 2017 Ho-nanoparticle-doping for improved high-energy laser fibers
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Proceedings Volume 10100, Optical Components and Materials XIV; 1010003 (2017) https://doi.org/10.1117/12.2255775
Event: SPIE OPTO, 2017, San Francisco, California, United States
A significant issue for holmium-doped fiber lasers (HoDFLs) operating near 2 μm is multiphonon quenching due to the high phonon energy ~1100 cm-1 of the silica host, which complicates power scaling due to reduced lifetimes and increased heating. Nanoparticle (NP) doping is a new technique where the structure surrounding the Ho ions is developed chemically prior to doping into the silica core. We have incorporated Ho3+ ions into various NPs, such as LaF3, Al2O3 and Lu2O3, to shield them from the silica glass matrix. Results indicate slightly longer lifetimes with Ho:LaF3 NPs and the possibility of further improvement with oxide NPs. We report the first of lasing in a Ho:Lu2O3 NP-doped fiber pumped at 1.95 μm and operating at 2.09 μm with a record slope efficiency of 85.2%.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Joseph Friebele, E. Joseph Friebele, Colin C. Baker, Colin C. Baker, Ashley A. Burdett, Ashley A. Burdett, Daniel L. Rhonehouse, Daniel L. Rhonehouse, Steven R. Bowman, Steven R. Bowman, Woohong Kim, Woohong Kim, Jasbinder S. Sanghera, Jasbinder S. Sanghera, Courtney Kucera, Courtney Kucera, Amber Vargas, Amber Vargas, John Ballato, John Ballato, Alexander Hemming, Alexander Hemming, Nikita Simakov, Nikita Simakov, John Haub, John Haub, } "Ho-nanoparticle-doping for improved high-energy laser fibers", Proc. SPIE 10100, Optical Components and Materials XIV, 1010003 (7 March 2017); doi: 10.1117/12.2255775; https://doi.org/10.1117/12.2255775

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