Ultra-sensitive refractive index sensing using a Hybrid photonic crystal external cavity laser and the optical heterodyne technique
This study presents a breakthrough in refractive index sensing by combining a silicon nitride 1D photonic crystal cavity in a hybrid external cavity laser with the optical heterodyne technique. Achieving ~10⁻⁷ RIU detection limit, which represents 400x improvement in detection capability over existing high-sensitivity devices.
Authors
- Simone Iadanza (ORCID: https://orcid.org/0000-0001-8470-4600)
- Liam O’Faoláin (ORCID: https://orcid.org/0000-0003-1160-7441)
- Maria V. Kotlyar (ORCID: https://orcid.org/0000-0002-6328-7171)
- Artem S. Vorobev (ORCID: https://orcid.org/0000-0002-3642-5225)
- T. Oliveira
Institutions
- Munster Technological University (IE)
Publication Details
- Published
- 2025-04-14
- DOI
- https://doi.org/10.1109/siphotonics64386.2025.10985733
- Primary Topic
- Photonic Crystals and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Science Foundation Ireland