Ytterbium-doped Y2O3 nanoparticle silica optical fibers for high power fiber lasers with suppressed photodarkening |
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| Authors: | S. Yoo M.P. Kalita A.S. Webb J.K. Sahu S. Das M. Pal |
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| Affiliation: | a Optoelectronic Research Centre, University of Southampton, Southampton So17 1BJ, United Kingdom
b Fiber Optics Laboratory, Central Glass and Ceramic Research Institute, CSIR, Kolkata 70032, India |
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| Abstract: | We report efficient laser demonstration and spectroscopic characteristics of a Yb-doped Y2O3 (or Y3Al5O12) nanoparticle silica fiber developed by conventional fiber fabrication technique. The spectroscopy study evidences modification in the environment of Yb ions by the Y2O3 nanoparticles. As a result, photodarkening induced loss is reduced by 20 times relative to Yb-doped aluminosilicate fibers. The fiber is suitable for power scaling with good laser slope efficiency of 79%. |
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| Keywords: | Optical fiber Fiber laser Fiber material Laser material Fiber fabrication Fiber characterization |
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