Efficient Green Ho:ZBLAN Fiber Laser with 450-nm Diode Pumping
In the past years, fluoride glass fibers (ZBLAN) doped with various rare-earth ions enabled a breakthrough in the development of coherent light sources directly emitting in the visible under blue diode pumping. Holmium ions <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(\text{Ho}^{3+})$</tex> offer intense absorption around 450 nm (as the corresponding transition is spin-allowed) and enable green emission at 550 nm (the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">${ }^{5} \mathrm{S}_{2}+{ }^{5} \mathrm{F}_{4} \rightarrow{ }^{5} \mathrm{I}_{8}$</tex> transition). Li et al. reported on a low-brightness GaN diode-pumped Ho:ZBLAN laser delivering 376 mW at 544 nm, however with a low optical efficiency of ~12% [1]. High-brightness core pumping enables the development of compact laser sources with high overall optical efficiency [2]. In the present work, we report on an efficient green Ho:ZBLAN fiber laser with high-brightness diode-pumping.
Authors
- Patrice Camy (ORCID: https://orcid.org/0000-0001-6823-7643)
- Thiphaine Rault
- Solenn Cozic (ORCID: https://orcid.org/0000-0003-0118-2443)
- Gilles Recoque
- Pavel Loiko
- Esrom Kifle (ORCID: https://orcid.org/0000-0003-4790-0965)
- Alain Braud
- Thierry Georges
Institutions
- Centre National de la Recherche Scientifique (FR)
- École Nationale Supérieure d'Ingénieurs de Caen (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- École des Métiers de l’Environnement (FR)
- Centre de Recherche sur les Ions, les Matériaux et la Photonique (FR)
- Centre Hospitalier Lannion Trestel (FR)
Publication Details
- Published
- 2025-06-23
- DOI
- https://doi.org/10.1109/cleo/europe-eqec65582.2025.11110511
- Primary Topic
- Solid State Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00