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Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array

Eichholz, Rene and Richter, Heiko and Pavlov, Sergey and Wienold, M. and Schrottke, L. and Hey, R. and Grahn, H. T. and Hübers, Heinz-Wilhelm (2011) Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array. Applied Physics Letters, 99. DOI: 10.1063/1.3645635.

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Official URL: http://apl.aip.org/resource/1/applab/v99/i14/p141112_s1


We report on a terahertz absorption spectrometer, which combines a grating monochromator, a quantum-cascade laser (QCL), and a microbolometer camera. The emission modes of the laser are spectrally resolved by the monochromator and imaged onto the camera. An absorption cell is placed between the QCL and the monochromator, and the absorption spectrum of methanol around 3.4 THz is measured by integrating simultaneously the signal of each of its Fabry-Pe´rot modes as a function of the laser driving current. The frequency coverage of the spectrometer is about 20 GHz.

Document Type:Article
Title:Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array
AuthorsInstitution or Email of Authors
Eichholz, Renerene.eichholz@dlr.de
Richter, HeikoHeiko.Richter@dlr.de
Pavlov, SergeySergeij.Pavlov@dlr.de
Wienold, M.PDI Berlin
Schrottke, L.PDI Berlin
Hey, R.PDI Berlin
Grahn, H. T.PDI Berlin
Hübers, Heinz-WilhelmTU Berlin, Heinz-Wilhelm.Huebers@dlr.de
Date:6 October 2011
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Keywords:QCL, quantum-cascade laser, Quantenkaskadenlaser, microbolometer array, Mikrobolometerkamera, THz, terahertz absorption spectrometer, spectroscopy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management
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 > Terahertz and Infrared Sensors
Deposited By: René Eichholz
Deposited On:09 Dec 2011 14:59
Last Modified:04 Apr 2013 16:33

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