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Nanoparticle doping as a way to enhance holmium fiber lasers efficiency
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SYSNO ASEP 0603146 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanoparticle doping as a way to enhance holmium fiber lasers efficiency Author(s) Kamrádek, Michal (URE-Y) RID
Kašík, Ivan (URE-Y) RID
Aubrecht, Jan (URE-Y) RID, ORCID
Vařák, Petr (URE-Y) ORCID, RID
Podrazký, Ondřej (URE-Y) RID
Bartoň, Ivo (URE-Y) ORCID, RID
Pokorný, Jan (URE-Y)
Peterka, Pavel (URE-Y) RID, ORCID
Honzátko, Pavel (URE-Y) RIDNumber of authors 9 Article number 131290 Source Title Optics Communications. - : Elsevier - ISSN 0030-4018
Roč. 575, 15 Jan (2025)Number of pages 5 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords optical-fibers ; fabrication ; nanoparticles OECD category Optics (including laser optics and quantum optics) R&D Projects GA23-05701S GA ČR - Czech Science Foundation (CSF) EH22_008/0004573 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support URE-Y - RVO:67985882 UT WOS 001357407700001 DOI https://doi.org/10.1016/j.optcom.2024.131290 Annotation Highly-doped holmium fibers have been prepared using modified chemical vapor deposition in combination with nanoparticle-doping method. Within a series of various Al2O3 and Ho3+ concentrations, relations between fibers composition and their fluorescence and laser parameters have been studied. Al/Ho molar ratio equal to at least 50 was found to be the key factor for fibers with outstanding parameters. Fibers with slope efficiency above 80%, laser threshold below 100 mW and fluorescence lifetime up to 1.6 ms have been prepared. Thanks to high Al2O3 concentrations, obtained through nanoparticle doping, we were able to achieve highperformance fibers in a wide range of Ho3+ concentrations. An output power of 19 W with 81% slope efficiency was reached using fiber with almost 4000 ppm of Ho3+ and 10 mol.% of Al2O3. This result is encouraging for highly efficient high-power cladding-pumped holmium fiber lasers, and studied relations between fibers composition and their laser parameters will be used in the designing of such laser sources. 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 2026 Electronic address https://www.sciencedirect.com/science/article/pii/S0030401824010277?via%3Dihub
Number of the records: 1