Dy3+-doped phosphate glass fibers for yellow lasers
Year: 2025
Type: conference-paper
Abstract: We report on the fabrication and characterization of Dy3+-doped phosphate glass fibers for applications in yellow lasers. The fibers (core/cladding diameters: 11/125μm) were fabricated in the system P2O5–Al2O3–Ba2O–K2O with their core doped with 0.12 at.% Dy3+. For bulk glass, the absorption cross-section σabs is 0.11×10-20 cm2 at 452.4nm (absorption bandwidth: 8.4nm), in the range well addressed by blue GaN laser diodes. The transition probabilities for Dy3+ ions are calculated using the Judd-Ofelt theory. The stimulated-emission cross-section in the yellow σSE is 0.36×10-20 cm2 at 574.1nm, and the luminescence lifetime for the 4F9/2 manifold is 818μs, indicating a luminescence quantum efficiency close to unity. μ-Raman and μ-luminescence mapping was performed over the fiber end-facet indicating a homogeneous core composition and a uniform distribution of Dy3+ ions.
DOI: 10.1117/12.3058421
Institutions: Centre National de la Recherche Scientifique, École Nationale Supérieure d'Ingénieurs de Caen, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre de Recherche sur les Ions, les Matériaux et la Photonique, Université de Caen Normandie, Universitat Rovira i Virgili, LINKS Foundation, Politecnico di Milano
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4410859210