High-spectral-resolution terahertz imaging with a quantum-cascade laser
dc.bibliographicCitation.firstPage | 13839 | |
dc.bibliographicCitation.issue | 13 | eng |
dc.bibliographicCitation.journalTitle | Optics Express | eng |
dc.bibliographicCitation.lastPage | 13849 | |
dc.bibliographicCitation.volume | 24 | |
dc.contributor.author | Hagelschuer, Till | |
dc.contributor.author | Rothbart, Nick | |
dc.contributor.author | Richter, Heiko | |
dc.contributor.author | Wienold, Martin | |
dc.contributor.author | Schrottke, Lutz | |
dc.contributor.author | Grahn, Holger T. | |
dc.contributor.author | Hübers, Heinz-Wilhelm | |
dc.date.accessioned | 2019-03-15T02:55:44Z | |
dc.date.available | 2019-06-28T07:29:59Z | |
dc.date.issued | 2016 | |
dc.description.abstract | We report on a high-spectral-resolution terahertz imaging system operating with a multi-mode quantum-cascade laser (QCL), a fast scanning mirror, and a sensitive Ge:Ga detector. By tuning the frequency of the QCL, several spectra can be recorded in 1.5 s during the scan through a gas cell filled with methanol (CH3OH). These experiments yield information about the local absorption and the linewidth. Measurements with a faster frame rate of up to 3 Hz allow for the dynamic observation of CH3OH gas leaking from a terahertz-transparent tube into the evacuated cell. In addition to the relative absorption, the local pressure is mapped by exploiting the effect of pressure broadening. | eng |
dc.description.version | publishedVersion | eng |
dc.format | application/pdf | |
dc.identifier.uri | https://doi.org/10.34657/4811 | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/1247 | |
dc.language.iso | eng | eng |
dc.publisher | Washington, DC : Optical Society of America | eng |
dc.relation.doi | https://doi.org/10.1364/OE.24.013839 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 620 | eng |
dc.subject.other | Terahertz imaging | eng |
dc.subject.other | Semiconductor lasers | eng |
dc.subject.other | quantum cascade | eng |
dc.subject.other | Spectroscopy | eng |
dc.subject.other | terahertz | eng |
dc.title | High-spectral-resolution terahertz imaging with a quantum-cascade laser | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | PDI | eng |
wgl.subject | Ingenieurwissenschaften | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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