Diamond-saw-diced multi-color ridge Pr,Gd:LiYF <sub>4</sub> waveguide lasers
Single-crystalline layers of 0.3 at.% Pr, 3.5 at.% Gd:LiYF<sub>4</sub> were grown by liquid phase epitaxy and microstructured using precision diamond-saw dicing, resulting in low-loss (0.16 dB/cm in the red) ridge waveguides with a sub-nm sidewall surface roughness. The continuous-wave red channel waveguide laser generated 504 mW at 639.6 nm with a high slope efficiency of 57.8%, a laser threshold of 34 mW, linearly polarized emission (<i>σ</i>), and high beam quality (M<sup>2</sup> = 1.66). Laser operation in the orange and deep-red was obtained. The polarized emission properties of Pr<sup>3+</sup> ions in the epitaxial layers are reported.
Authors
- Patrice Camy (ORCID: https://orcid.org/0000-0001-6823-7643)
- Florent Starecki (ORCID: https://orcid.org/0009-0004-7637-9122)
- Pavel Loiko
- Gurvan Brasse (ORCID: https://orcid.org/0000-0001-8129-9566)
- Jı Eun Bae (ORCID: https://orcid.org/0000-0002-3643-4287)
- Jonathan Demaimay
- Blandine Guichardaz
- Alain Braud
- Abdelmjid Benayad
Institutions
- Centre National de la Recherche Scientifique (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Normandie Université (FR)
- Centre de Recherche sur les Ions, les Matériaux et la Photonique (FR)
- Université de Franche-Comté (FR)
- Université de Caen Normandie (FR)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-09-29
- DOI
- https://doi.org/10.1364/ol.575775
- Primary Topic
- Laser Design and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00