Hübers, Heinz-Wilhelm and Pavlov, S.G. and Richter, H. and Semenov, A. and Mahler, L. and Tredicucci, A. and Beere, H.E. and Ritchie, D.A. (2007) Molecular Spectroscopy with TeraHertz Quantum Cascade Lasers. Journal of Nanoelectronics and Optoelectronics, 2 (1), pp. 101-107. American Scientific Publishers. doi: 10.1166/jno.2007.010.
Full text not available from this repository.
Abstract
We have implemented quantum cascade lasers (QCLs) operating at about 2.5 THz in a spectrometer for high resolution molecular spectroscopy. One QCL has a Fabry-Perot resonator while the other is a distributed feedback laser. Linewidth and frequency tunability of both QCLs were investigated by mixing the radiation from the QCL with that from a 2.5 THz gas laser. Both were found sufficient for Doppler limited spectroscopy. Rotational tranistions of methanol were detected in absorption using a QCL as radiation source. Amplitude as well as frequency modulation of the output power of the QCL were used. The absolute frequency was determined simultaneously with the absorption signal by mixing a small part of the radiation from the QCL with that from a gas laser. The pressure broadening and the pressure shift of a rotational transition of methanol at 2.519 THz were measured in order to demonstrate the performance of the spectrometer.
Item URL in elib: | https://elib.dlr.de/48285/ | ||||||||||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||||||||||
Title: | Molecular Spectroscopy with TeraHertz Quantum Cascade Lasers | ||||||||||||||||||||||||||||||||||||
Authors: |
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Date: | 1 April 2007 | ||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Journal of Nanoelectronics and Optoelectronics | ||||||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||||||
Volume: | 2 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1166/jno.2007.010 | ||||||||||||||||||||||||||||||||||||
Page Range: | pp. 101-107 | ||||||||||||||||||||||||||||||||||||
Publisher: | American Scientific Publishers | ||||||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||||||
Keywords: | Terahertz, Quantum Cascade Laser, High Resolution, Spectroscopy | ||||||||||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||||||||||||||||||
HGF - Program: | Space (old) | ||||||||||||||||||||||||||||||||||||
HGF - Program Themes: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||||||||||||||
DLR - Research area: | Space | ||||||||||||||||||||||||||||||||||||
DLR - Program: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | W - no assignment (old) | ||||||||||||||||||||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Planetary Research | ||||||||||||||||||||||||||||||||||||
Deposited By: | Hübers, Dr. Heinz-Wilhelm | ||||||||||||||||||||||||||||||||||||
Deposited On: | 27 Jul 2007 | ||||||||||||||||||||||||||||||||||||
Last Modified: | 27 Apr 2009 13:45 |
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