High-quality microresonators in the longwave infrared based on native germanium
dc.contributor.author | Ren, Dingding | |
dc.contributor.author | Dong, Chao | |
dc.contributor.author | Addamane, Sadhvikas J. | |
dc.contributor.author | Burghoff, David | |
dc.date.accessioned | 2023-01-25T12:31:48Z | |
dc.date.available | 2023-01-25T12:31:48Z | |
dc.date.created | 2022-10-06T13:37:14Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | https://hdl.handle.net/11250/3046304 | |
dc.description.abstract | The longwave infrared (LWIR) region of the spectrum spans 8 to 14 μm and enables high-performance sensing and imaging for detection, ranging, and monitoring. Chip-scale LWIR photonics has enormous potential for real-time environmental monitoring, explosive detection, and biomedicine. However, realizing technologies such as precision sensors and broadband frequency combs requires ultra low-loss and low-dispersion components, which have so far remained elusive in this regime. Here, we use native germanium to demonstrate the first high-quality microresonators in the LWIR. These microresonators are coupled to partially-suspended Ge waveguides on a separate glass chip, allowing for the first unambiguous measurements of isolated linewidths. At 8 μm, we measured losses of 0.5 dB/cm and intrinsic quality (Q) factors of 2.5 × 105, nearly two orders of magnitude higher than prior LWIR resonators. Our work portends the development of novel sensing and nonlinear photonics in the LWIR regime. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Nature | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | High-quality microresonators in the longwave infrared based on native germanium | en_US |
dc.title.alternative | High-quality microresonators in the longwave infrared based on native germanium | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | Nature Communications | en_US |
dc.identifier.doi | 10.1038/s41467-022-32706-1 | |
dc.identifier.cristin | 2059205 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 |