Abstract: In the paper, we report on the development of a synthesis and melting method of phosphate glasses designed for active microstructured fiber manufacturing. Non-doped glass synthesized in a P2O5-Al2O3-BaO-ZnO-MgO-Na2O oxide system served as the matrix material; meanwhile, the glass was doped with 6 mol% (18 wt%) of Yb2O3, as fiber core. The glasses were well-fitted in relation to optical (refractive index) and thermal proprieties (thermal expansion coefficient, rheology). The fiber with the Yb3+-doped core, with a wide internal photonic microstructure for a laser pump, as well as with a high relative hole size in the photonic outer air-cladding, was produced. The laser built on the basis of this fiber enabled achieving 8.07 W of output power with 20.5% slope efficiency against the launched pump power, in single-mode operation M2 = 1.59, from a 53 cm-long cavity.
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Stępień, R.; Franczyk, M.; Pysz, D.; Kujawa, I.; Klimczak, M.; Buczyński, R. Ytterbium-Phosphate Glass for Microstructured Fiber Laser. Materials 2014, 7, 4723-4738.
Stępień R, Franczyk M, Pysz D, Kujawa I, Klimczak M, Buczyński R. Ytterbium-Phosphate Glass for Microstructured Fiber Laser. Materials. 2014; 7(6):4723-4738.
Stępień, Ryszard; Franczyk, Marcin; Pysz, Dariusz; Kujawa, Ireneusz; Klimczak, Mariusz; Buczyński, Ryszard. 2014. "Ytterbium-Phosphate Glass for Microstructured Fiber Laser." Materials 7, no. 6: 4723-4738.