Mid-infrared emissions of Dy<sup>3+</sup> ions in CaF<sub>2</sub>
We report on a comprehensive spectroscopic study of singly Dy 3+ doped and Er 3+ ,Dy 3+ codoped calcium fluoride (CaF2) crystals for mid- infrared laser applications. The f-f transition probabilities of Dy 3+ were determined by the Judd-Ofelt theory. The stimulated-emission cross-section reaches 0.25×10 -20 cm 2 at 2.93 µm corresponding to an emission bandwidth of 350 nm. The Er 3+ → Dy 3+ energy transfer efficiency in codoped crystals is quantified. The 4.4-µm Dy 3+ emission is observed for the first time from fluoride crystals.
Authors
- Alain Braud
- Liudmila Fomicheva
- Е. Б. Дунина (ORCID: https://orcid.org/0000-0002-7222-9790)
- Pavel Loiko
- Ngoc Nguyen (ORCID: https://orcid.org/0000-0002-9476-9245)
- Patrice Camy
- Aleksei Kornienko
- Abdelmjid Benayad
Institutions
- Centre National de la Recherche Scientifique (FR)
- Vitebsk State Technological University (BY)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Centre de Recherche sur les Ions, les Matériaux et la Photonique (FR)
- Belarusian State University of Informatics and Radioelectronics (BY)
Publication Details
- Journal
- EPJ Web of Conferences
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1051/epjconf/202533508012
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00