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All-solution doping technique for high power fiber lasers - refractive index influence in the vicinity of Al:P = 1:1

: Kuhn, S.; Hein, S.; Hupel, C.; Nold, J.; Haarlammert, N.; Schreiber, T.; Eberhardt, R.; Tünnermann, A.


Optical Society of America -OSA-, Washington/D.C.:
Advanced Solid State Lasers : Part of Laser Congress; 1-5 October 2017, Nagoya, Aichi, Japan
Washington, DC: OSA, 2017 (OSA Technical digest series)
ISBN: 978-0-9600380-7-7
Paper ATu5A.6
Advanced Solid State Lasers Conference (ASSL) <2017, Nagoya>
Laser Congress <2017, Nagoya>
Fraunhofer IOF ()

A novel and simple solution doping technique is used to explore the refractive index behavior of Al,P-doped SiO2 in the vicinity of the Al:P-ratio of 1:1 at low doping concentrations. It is found that even if Al:P = 1:1 is matched precisely an index increase is observed. This is in contradiction to previous findings in the literature and the already sophisticated models need to be refined in this region.