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Materials 2014, 7(6), 4723-4738; doi:10.3390/ma7064723
Article

Ytterbium-Phosphate Glass for Microstructured Fiber Laser

1
,
1
,
1
,
1
,
1
 and
1,2,*
1 Institute of Electronic Materials Technology, 133 Wolczynska Str., 01-919 Warsaw, Poland 2 Department of Physics, University of Warsaw, 7 Pasteura Str., 02-093 Warsaw, Poland
* Author to whom correspondence should be addressed.
Received: 5 May 2014 / Revised: 11 June 2014 / Accepted: 11 June 2014 / Published: 19 June 2014
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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.
Keywords: phosphate glass; ytterbium oxide; glass melting; glass properties measurements; photonic crystal fiber (PCF); fiber laser phosphate glass; ytterbium oxide; glass melting; glass properties measurements; photonic crystal fiber (PCF); fiber laser
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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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.

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