Spectral properties of thulium doped optical fibers for fiber lasers around 2 micrometers

M. Kamrádek; J. Aubrecht; P. Peterka; O. Podrazký; P. Honzátko; J. Cajzl; J. Mrázek; V. Kubeček; I. Kašik

doi:10.1117/12.2265697

16 May 2017 Spectral properties of thulium doped optical fibers for fiber lasers around 2 micrometers

M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček, I. Kašik

Proceedings Volume 10232, Micro-structured and Specialty Optical Fibres V; 1023205 (2017) https://doi.org/10.1117/12.2265697
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

Silica optical fibers doped with rare-earth elements are key components of high-power fiber lasers operating in near-infrared region up to 2.1 μm. In this contribution we deal with preparation and optical characterization of silica-based optical preforms and fibers doped with thulium for fiber lasers operating around 2 μm. A set of fibers with thulium concentration ranges 1000-5000 ppm was prepared by the MCVD solution doping method and characterized. A decrease of fluorescence lifetime of thulium from 487 μs to 378 μs was observed with increasing rare-earth concentration in fiber core. This phenomenon can be explained by energy transfer between ions and ion clustering. Fabricated fibers were suitable for use in fiber lasers.

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M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček, and I. Kašik "Spectral properties of thulium doped optical fibers for fiber lasers around 2 micrometers", Proc. SPIE 10232, Micro-structured and Specialty Optical Fibres V, 1023205 (16 May 2017); https://doi.org/10.1117/12.2265697

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