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Temperature-dependence of cross-relaxation coefficient of the thulium-doped silica fibers
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SYSNO ASEP 0584358 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Temperature-dependence of cross-relaxation coefficient of the thulium-doped silica fibers Author(s) Jiříčková, Bára (URE-Y)
Schreiber, Ondřej (URE-Y)
Vařák, Petr (URE-Y)
Grábner, Martin (URE-Y)
Aubrecht, Jan (URE-Y) RID
Peterka, Pavel (URE-Y) RIDNumber of authors 6 Article number 125730H Source Title Proceedings of SPIE - The International Society for Optical Engineering, Specialty Optical Fibres, 12573. - Bellingham : SPIE, 2023 / Kalli K. ; Mendez A. ; Peterka P. - ISSN 0277-786X - ISBN 978-151066266-7 Number of pages 5 s. Publication form Print - P Action The International Society for Optical Engineering-Specialty Optical Fibres 2023 Event date 24.04.2023 - 27.04.2023 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords cross-relaxation coefficient ; numerical model ; spectroscopy ; temperature effect ; thulium ; thulium-doped silica fibers OECD category Optics (including laser optics and quantum optics) R&D Projects GA23-05701S GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 EID SCOPUS 85170638785 DOI 10.1117/12.2666642 Annotation Nowadays, the main limiting factor of power scaling of high-power thulium fiber lasers is high heat load causing thermal mode instability (TMI) and other thermally induced difficulties. Increased temperature of the fiber core also leads to large changes of its spectroscopic parameters. In this work, we present the experimental measurements of the temperature dependence of the fluorescence lifetime of the thulium-doped fibers. The results of the temperature-dependent fluorescence lifetime, absorption and emission cross-section spectra, and energy transfer coefficient k3011, which characterizes so-called “two-for-one” cross-relaxation process3H43H6 →3F43F4, were employed to develop a numerical model for simulation and optimization of high-power thulium-doped fiber lasers and amplifiers with temperature-dependent fiber characteristics Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2024 Electronic address https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12573/125730H/Temperature-dependence-of-cross-relaxation-coefficient-of-the-thulium-doped/10.1117/12.2666642.short
Number of the records: 1