Terahertz absorption-saturation and emission from electron-doped germanium quantum wells
dc.bibliographicCitation.firstPage | 7245 | eng |
dc.bibliographicCitation.issue | 5 | eng |
dc.bibliographicCitation.journalTitle | Optics express : the international electronic journal of optics | eng |
dc.bibliographicCitation.lastPage | 7258 | eng |
dc.bibliographicCitation.volume | 28 | eng |
dc.contributor.author | Ciano, Chiara | |
dc.contributor.author | Virgilio, Michele | |
dc.contributor.author | Bagolini, Luigi | |
dc.contributor.author | Baldassarre, Leonetta | |
dc.contributor.author | Pashkin, Alexej | |
dc.contributor.author | Helm, Manfred | |
dc.contributor.author | Montanari, Michele | |
dc.contributor.author | Persichetti, Luca | |
dc.contributor.author | Di Gaspare, Luciana | |
dc.contributor.author | Capellini, Giovanni | |
dc.contributor.author | Paul, Douglas J. | |
dc.contributor.author | Scalari, Giacomo | |
dc.contributor.author | Faist, Jèrome | |
dc.contributor.author | De Seta, Monica | |
dc.contributor.author | Ortolani, Michele | |
dc.date.accessioned | 2021-12-01T06:11:03Z | |
dc.date.available | 2021-12-01T06:11:03Z | |
dc.date.issued | 2020 | |
dc.description.abstract | We study radiative relaxation at terahertz frequencies in n-type Ge/SiGe quantum wells, optically pumped with a terahertz free electron laser. Two wells coupled through a tunneling barrier are designed to operate as a three-level laser system with non-equilibrium population generated by optical pumping around the 1→3 intersubband transition at 10 THz. The non-equilibrium subband population dynamics are studied by absorption-saturation measurements and compared to a numerical model. In the emission spectroscopy experiment, we observed a photoluminescence peak at 4 THz, which can be attributed to the 3→2 intersubband transition with possible contribution from the 2→1 intersubband transition. These results represent a step towards silicon-based integrated terahertz emitters. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/7574 | |
dc.identifier.uri | https://doi.org/10.34657/6621 | |
dc.language.iso | eng | eng |
dc.publisher | Washington, DC : Soc. | eng |
dc.relation.doi | https://doi.org/10.1364/OE.381471 | |
dc.relation.essn | 1094-4087 | |
dc.rights.license | OSA Open Access Publishing Agreement | eng |
dc.rights.uri | https://www.osapublishing.org/library/license_v1.cfm | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | radiative relaxation at terahertz frequencies | eng |
dc.subject.other | quantum wells | eng |
dc.subject.other | intersubband transition | eng |
dc.title | Terahertz absorption-saturation and emission from electron-doped germanium quantum wells | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | MBI | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Terahertz absorption-saturation and emission from electron-doped germanium quantum wells.pdf
- Size:
- 1.06 MB
- Format:
- Adobe Portable Document Format
- Description: