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Eichholz, Rene and Richter, Heiko and Wienold, Martin and Schrottke, Lutz and Grahn, H. T. and Hübers, Heinz-Wilhelm (2013) High-frequency modulation spectroscopy with a THz quantum-cascade laser. 7. THz Frischlingetreffen, 2013-07-17 - 2013-07-19, Berlin, Deutschland.
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Abstract
A terahertz absorption spectrometer with a quantum-cascade laser (QCL) for high-resolution molecular spectroscopy is realized. The spectrometer is based on high-frequency (up to 50 MHz) modulation of the QCL frequency. This allows for the determination of the absorption coefficient and dispersion of the absorbing medium along with a very precise measurement of the line shape of the absorption feature. The design and performance of the spectrometer are presented, and its sensitivity and frequency calibration are discussed.
| Item URL in elib: | https://elib.dlr.de/84782/ | ||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||
| Title: | High-frequency modulation spectroscopy with a THz quantum-cascade laser | ||||||||||||||||||||||||||||
| Authors: |
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| Date: | 17 July 2013 | ||||||||||||||||||||||||||||
| Refereed publication: | No | ||||||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||
| Keywords: | THz spectroscopy, QCL, quantum cascade laser, frequency modulation | ||||||||||||||||||||||||||||
| Event Title: | 7. THz Frischlingetreffen | ||||||||||||||||||||||||||||
| Event Location: | Berlin, Deutschland | ||||||||||||||||||||||||||||
| Event Type: | national Conference | ||||||||||||||||||||||||||||
| Event Start Date: | 17 July 2013 | ||||||||||||||||||||||||||||
| Event End Date: | 19 July 2013 | ||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||
| HGF - Program: | Transport | ||||||||||||||||||||||||||||
| HGF - Program Themes: | Traffic Management (old) | ||||||||||||||||||||||||||||
| DLR - Research area: | Transport | ||||||||||||||||||||||||||||
| DLR - Program: | V VM - Verkehrsmanagement | ||||||||||||||||||||||||||||
| DLR - Research theme (Project): | V - FAMOUS 2 (old) | ||||||||||||||||||||||||||||
| Location: | Berlin-Adlershof | ||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Planetary Research > Experimentelle Planetenphysik | ||||||||||||||||||||||||||||
| Deposited By: | Eichholz, René | ||||||||||||||||||||||||||||
| Deposited On: | 13 Nov 2013 13:44 | ||||||||||||||||||||||||||||
| Last Modified: | 24 Apr 2024 19:51 |
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