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Nanoparticle doping as a way to enhance holmium fiber lasers efficiency

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    SYSNO ASEP0603146
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleNanoparticle 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) RID
    Number of authors9
    Article number131290
    Source TitleOptics Communications. - : Elsevier - ISSN 0030-4018
    Roč. 575, 15 Jan (2025)
    Number of pages5 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    Keywordsoptical-fibers ; fabrication ; nanoparticles
    OECD categoryOptics (including laser optics and quantum optics)
    R&D ProjectsGA23-05701S GA ČR - Czech Science Foundation (CSF)
    EH22_008/0004573 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Method of publishingLimited access
    Institutional supportURE-Y - RVO:67985882
    UT WOS001357407700001
    DOI https://doi.org/10.1016/j.optcom.2024.131290
    AnnotationHighly-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.
    WorkplaceInstitute of Radio Engineering and Electronics
    ContactPetr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488
    Year of Publishing2026
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0030401824010277?via%3Dihub
Number of the records: 1  

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