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The effect of fiber fabrication process on the photoluminescence properties of RE-doped optical fiber preforms and fibers
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SYSNO ASEP 0560328 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The effect of fiber fabrication process on the photoluminescence properties of RE-doped optical fiber preforms and fibers Author(s) Vařák, Petr (URE-Y)
Kašík, Ivan (URE-Y) RID
Peterka, Pavel (URE-Y) RID
Mrázek, Jan (URE-Y) RID, ORCID
Kamrádek, Michal (URE-Y)
Aubrecht, Jan (URE-Y) RID
Podrazký, Ondřej (URE-Y) RID
Bartoň, Ivo (URE-Y) ORCID, RID
Franczyk, M. (PL)
Buczynski, R. (PL)
Honzátko, Pavel (URE-Y) RIDNumber of authors 11 Article number 1214005 Source Title MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES VII, 12140. - Bellingham : SPIE, 2022 / Kalli K. ; Peterka P. ; Bunge C.A. - ISSN 0277-786X - ISBN 978-1-5106-5156-2 Pages roč. 12140 (2022) Series Proceedings of SPIE Number of pages 7 s. Publication form Print - P Action Conference on Micro-Structured and Specialty Optical Fibres VII Event date 03.04.2022 - 20.05.2022 VEvent location Virtual Country FR - France Event type WRD Language eng - English Country US - United States Keywords Optical fiber ; preform ; silica glass ; holmium ; fiber lasers ; luminescence ; fluorescence lifetime Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects GF21-45431L GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 UT WOS 000838075300004 EID SCOPUS 85134501935 DOI 10.1117/12.2620487 Annotation Holmium- doped aluminosilicate fibers are frequently used in holmium-doped fiber lasers (HDFL) thanks to their strong emission at 2 mu m. Fluorescence lifetime is one of the most important parameters to determine the suitability of holmiumdoped optical fibers for use in fiber lasers. One of the potential mechanisms for the shortening of fluorescence lifetime is the diffusion of RE ions and Al2O3 at high temperatures during the fiber preparation process. We have prepared a Hodoped aluminosilicate optical fiber preform using MCVD combined with nanoparticle doping. The prepared preform was subjected to various fabrication processes such as preform elongation, fiber drawing or additional heat treatment, the fluorescence lifetime was measured in all stages of the experiment and its dependency on the fabrication process was discussed. The original preform exhibited a long fluorescence lifetime of 1.433 ms. Gradual application of fiber fabrication processes such as preform elongation or fiber drawing resulted in a decline of fluorescence lifetime down to 1.174 ms in the case of overcladded optical fiber. The decrease of fluorescence lifetime was ascribed to the diffusion of dopants and the changes in the Ho3+ ion environment, which increased the rate of multiphonon relaxation, as well as clustering of holmium ions, which increased concentration quenching. 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 2023 Electronic address https://doi.org/10.1117/12.2620487
Number of the records: 1