High power chip-scale laser
The lack of high-power integrated lasers has been limiting silicon photonics. Despite much progress in chip-scale laser integration, power output remains below levels required for key applications due to low energy efficiency at high pumping currents. Here we break this power limitation by coupling a broad-area multimode gain chip to a silicon-nitride ring resonator and single-mode filter. The resulting optical feedback causes the multimode-gain chip to concentrate its power into a single highly coherent mode. Our device produces more than 150 mW of power and 400 kHz linewidth. We achieve these metrics while maintaining a small footprint of 3 mm 2 .
Authors
- Andrés Gil-Molina (ORCID: https://orcid.org/0000-0002-0833-9143)
- Yair Antman
- Michal Lipson (ORCID: https://orcid.org/0000-0003-2903-3765)
- Alexander L. Gaeta (ORCID: https://orcid.org/0000-0001-6877-7316)
- Ohad Westreich (ORCID: https://orcid.org/0000-0001-8331-3157)
- Xingchen Ji (ORCID: https://orcid.org/0000-0002-0284-0818)
Institutions
- Columbia University (US)
Publication Details
- Journal
- Optics Express
- Published
- 2024-08-26
- DOI
- https://doi.org/10.1364/oe.528864
- Citations
- 5
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Science Foundation
- Semiconductor Research Corporation
- Defense Advanced Research Projects Agency
- Advanced Research Projects Agency - Energy
- Army Research Office