Thulium-doped silica fibers with enhanced ³H₄ level lifetime: modelling the devices for 800-820 nm band

Peterka, Pavel, Kasik, Ivan, Dhar, Anirban, Dussardier, Bernard and Blanc, Wilfried (2010) Thulium-doped silica fibers with enhanced ³H₄ level lifetime: modelling the devices for 800-820 nm band. Conference on High-Power Lasers and Applications V, , Beijing, China. 18 - 19 Oct 2010. 9 pp . (doi:10.1117/12.871756).

Abstract

Silica-based thulium-doped fiber devices operating around 810 nm would extend the spectral range covered by highpower fiber devices. Using a comprehensive numerical model of the fiber we have shown that efficient lasing at 810 nm can be achieved for specific ranges of the laser cavity parameters in silica-based thulium-doped fibers with enhanced ³H₄ lifetime up to 58 µs as measured in our highly alumina-codoped fibers. We present optimization of the thulium-doped fiber and laser cavity parameters and also potential applications of the developed host material in amplifiers and broadband sources.

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