A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

First Tellurite Composite Fiber with NIR‐Driven Green Persistent Luminescence




TekijätSantos Magalhães, Evellyn; Nasser, Khaldoon; Vakkada Ramachandran, Arjun; Närhi, Mikko; Tuomisto, Minnea; Boussard‐Plédel, Catherine; Troles, Johann; Smet, Philippe F.; Lastusaari, Mika; Petit, Laeticia

KustantajaWiley

Julkaisuvuosi2025

Lehti: Advanced Optical Materials

Artikkelin numeroe02249

eISSN2195-1071

DOIhttps://doi.org/10.1002/adom.202502249

Julkaisun avoimuus kirjaamishetkelläAvoimesti saatavilla

Julkaisukanavan avoimuus Osittain avoin julkaisukanava

Verkko-osoitehttps://doi.org/10.1002/adom.202502249

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/505445447


Tiivistelmä

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.


Ladattava julkaisu

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Julkaisussa olevat rahoitustiedot
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.


Last updated on 2025-19-11 at 13:17