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7 March 2019 More than 100W, 18cm Yb-doped phosphate fiber amplifier
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Abstract
Phosphate glass is an attractive material for rare-earth-doped fiber manufacturing because high doping levels are possible without introducing negative effects such as up-conversion or increased non-radiative recombination. In this paper we present a novel PM heavily Yb-doped polarization maintaining large mode area phosphate fiber and a < 100 W power level amplifier based on this fiber. The fiber was fabricated by a rod-in-tube technique. An 18 cm long piece of the fiber was used to build a high-power all-fiber amplifier. 106 W of output power at 1030 nm was achieved with 55 % slope efficiency with respect to the launched pump power. To the best of our knowledge, this is the highest average power ever demonstrated for short phosphate fiber lasers.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Leonid Kotov, Mehmetcan Akbulut, Arturo Chavez-Pirson, Jie Zong, and N. Peyghambarian "More than 100W, 18cm Yb-doped phosphate fiber amplifier", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108970X (7 March 2019); https://doi.org/10.1117/12.2508080
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