| Issue |
Photoniques
Number 101, Mars-Avril 2020
|
|
|---|---|---|
| Page(s) | 27 - 32 | |
| Section | Focus: Terahertz technologies | |
| DOI | https://doi.org/10.1051/photon/202010127 | |
| Published online | 29 April 2020 | |
Terahertz technologies
Terahertz spectroscopy using quantum-cascade lasers
1
German Aerospace Center (DLR), Institute of Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
2
Humboldt-Universität zu Berlin, Department of Physics, Newtonstr. 15, 12489 Berlin, Germany
3
Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V., Hausvogteiplatz 5−7, 10117 Berlin, Germany
* e-mail: Heinz-Wilhelm.Huebers@dlr.de
Terahertz (THz) quantum-cascade lasers (QCLs) provide powerful, narrow-band, and frequencytunable radiation, which makes them ideal sources for high-resolution molecular spectroscopy. A first application of a THz QCL has been as local oscillator in a heterodyne spectrometer for astronomy on board a Boeing 747. For laboratory spectroscopy, QCLs close the so-called THz gap and enable new research topics.
© EDP Sciences, 2020
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