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

0350205 - ÚFE 2011 RIV US eng C - Conference Paper (international conference)
Peterka, Pavel - Kašík, Ivan - Dhar, Anirban - Dussardier, B. - Blanc, W.
Thulium-doped silica fibers with enhanced 3H4 level lifetime: modelling the devices for 800-820 nm band.
High-Power Lasers and Applications V. Vol. 7843. Bellingham: SPIE, 2010 - (Upendra, S.), 7843A-1-7843A-9. ISBN 978-0-8194-8373-7. ISSN 0277-786X.
[Conference on High-Power Lasers and Applications V. Beijing (CN), 18.10.2010-19.10.2010]
R&D Projects: GA MŠMT(CZ) ME10119; GA ČR GPP102/10/P554
Institutional research plan: CEZ:AV0Z20670512
Keywords : Fiber lasers * amplifiers * optical fiber
Subject RIV: BH - Optics, Masers, Lasers

Silica-based thulium-doped fiber devices operating around 810 nm would extend the spectral range covered by high-power fiber devices. The 3H4 lifetime of 58 us was measured in our highly alumina-codoped fibers that represents a significant improvement compared to pure or weakly modified silica glass (14 µs). Using a comprehensive numerical model of the fiber we have optimized the fiber laser at 810 nm. We discuss possibility of applications of the host material in amplifiers and broadband sources.
Permanent Link: http://hdl.handle.net/11104/0190267