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Título
Fs-laser-written erbium-doped double tungstate waveguide laser
Autor(es)
Materia
Femtosecond laser writing
Laser amplifiers
Laser beams
Laser operation
Negative refractive index
Upconversion lasers
Clasificación UNESCO
2209.10 láseres
2209 Óptica
Fecha de publicación
2018
Editor
Optical Society of America (Washington (D.C.), Estados Unidos)
Citación
E. Kifle, P. Loiko, C. Romero, J. Vázquez de Aldana, A. Ródenas, V. Jambunathan, V. Zakharov, A. Veniaminov, A. Lucianetti, T. Mocek, M. Aguiló, F. DÃaz, U. Griebner, V. Petrov, and X. Mateos (2018). Fs-laserwritten erbium-doped double tungstate waveguide laser. Opt. Express 26, pp. 30826-30836
Resumen
[EN]We report on the first erbium (Er3+) doped double tungstate waveguide laser. As a gain material, we studied a monoclinic Er3+:KLu(WO4)2 crystal. A depressed-index buried channel waveguide formed by a 60 μm-diameter circular cladding was fabricated by 3D femtosecond direct laser writing. The waveguide was characterized by confocal laser microscopy, μ-Raman and μ-luminescence mapping, confirming that the crystallinity of the core is preserved. The waveguide laser, diode pumped at 981 nm, generated 8.9 mW at 1533.6 nm with a slope efficiency of 20.9% in the continuous-wave regime. The laser polarization was linear (E Nm). The laser threshold was at 93 mW of absorbed pump power.
URI
DOI
10.1364/OE.26.030826
Versión del editor
Colecciones
- ALF. Artículos [303]
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