Lasing in a femtosecond-laser-written single-scan waveguide fabricated in Tm-doped BGG glass
We report lasing action in a femtosecond-laser-inscribed waveguide in thulium-doped barium-gallium-germanium oxide (BGG) glass. A laser cavity was assembled with this waveguide that provided a single-mode output of 62 mW when pumped at 1.6 µm. The waveguide was fabricated using a single laser scan to create a near-circular cross section with a positive refractive index change of approximately 3.5 × 10<sup>-3</sup>. Analysis of the laser-modified region was performed using electron-probe microanalysis and Raman spectroscopy. These findings establish BGG glass as a promising platform for the fabrication of mid-infrared integrated photonic devices.
Authors
- Albert Dupont
- Jérôme Lapointe (ORCID: https://orcid.org/0000-0002-3155-1871)
- Réal Vallée (ORCID: https://orcid.org/0000-0002-8437-2463)
- Younès Messaddeq (ORCID: https://orcid.org/0000-0002-0868-2726)
- Théo Guérineau (ORCID: https://orcid.org/0000-0002-2595-5191)
- Stanislav O. Leonov (ORCID: https://orcid.org/0000-0003-1399-0798)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-12-19
- DOI
- https://doi.org/10.1364/ol.547643
- Citations
- 11
- Primary Topic
- Laser Material Processing Techniques
- Type
- article
- Field-Weighted Citation Impact
- 4.12
Funders
- Canada Foundation for Innovation
- Natural Sciences and Engineering Research Council of Canada
- Fonds de recherche du Québec – Nature et technologies