| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 08012 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Optical Materials | |
| DOI | https://doi.org/10.1051/epjconf/202533508012 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533508012
Mid-infrared emissions of Dy3+ ions in CaF2
1 Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252 CEA-CNRS- ENSICAEN, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France
2 Vitebsk State Technological University, 72 Moskovskaya Ave., 210035 Vitebsk, Belarus
3 Belarusian State University of Informatics and Radioelectronics, 6 Brovka St., 220027 Minsk, Belarus
Published online: 22 September 2025
Abstract
We report on a comprehensive spectroscopic study of singly Dy3+ doped and Er3+,Dy3+ codoped calcium fluoride (CaF2) crystals for mid- infrared laser applications. The f-f transition probabilities of Dy3+ were determined by the Judd-Ofelt theory. The stimulated-emission cross-section reaches 0.25×10-20 cm2 at 2.93 µm corresponding to an emission bandwidth of 350 nm. The Er3+ → Dy3+ energy transfer efficiency in codoped crystals is quantified. The 4.4-µm Dy3+ emission is observed for the first time from fluoride crystals.
© The Authors, published by EDP Sciences, 2025
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