A1 Refereed original research article in a scientific journal
First Tellurite Composite Fiber with NIR‐Driven Green Persistent Luminescence
Authors: Santos Magalhães, Evellyn; Nasser, Khaldoon; Vakkada Ramachandran, Arjun; Närhi, Mikko; Tuomisto, Minnea; Boussard‐Plédel, Catherine; Troles, Johann; Smet, Philippe F.; Lastusaari, Mika; Petit, Laeticia
Publisher: Wiley
Publication year: 2025
Journal: Advanced Optical Materials
Article number: e02249
eISSN: 2195-1071
DOI: https://doi.org/10.1002/adom.202502249
Publication's open availability at the time of reporting: Open Access
Publication channel's open availability : Partially Open Access publication channel
Web address : https://doi.org/10.1002/adom.202502249
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/505445447
Expanding the excitation range of persistent luminescent (PeL) materials into the near infrared (NIR) region is critical to enable remote, flexible, and compact advanced optical systems. In this study, the fabrication of the first composite fiber based on SrAl2O4:Eu2+, Dy3+ phosphors embedded in Yb3+/Tm3+ co-doped tellurite glass is reported. The fiber is drawn from a translucent, crack-free composite preform prepared with 0.5 wt.% PeL phosphors. Light propagation in the fiber is demonstrated despite the presence of the PeL phosphors. Long-lasting green emission from the preform and fiber is driven by 980 nm and suggests the survival of the PeL phosphors during the preform preparation and fiber drawing processes. The presence of the PeL phosphors in the glass matrix is confirmed using SEM/EDS composition analysis. This work offers a practical and scalable approach for integrating NIR-excitable PeL materials into fiber-based platforms, opening new opportunities for their application in advanced photonic technologies.
Downloadable publication This is an electronic reprint of the original article. |
Funding information in the publication:
This work was supported by the Research Council of Finland [Flagship Program, Photonics Research and Innovation PREIN-320165] and Business Finland (OFFULA project-2689). MN acknowledges the Weisell Foundation for funding.