elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Submegahertz frequency stabilization of a terahertz quantum cascade laser to a molecular absorption line

Richter, Heiko and Pavlov, Sergei G. and Semenov, Alexey and Mahler, L. and Tredicucci, A. and Beere, H. E. and Ritchie, D. A. and Hübers, Heinz-Wilhelm (2010) Submegahertz frequency stabilization of a terahertz quantum cascade laser to a molecular absorption line. Applied Physics Letters, 96 (7), 071112-071112. American Institute of Physics (AIP). DOI: [doi:10.1063/1.3324703]

[img]
Preview
PDF
273kB

Abstract

The frequency of a terahertz quantum-cascade laser is stabilized to the absorption line of methanol gas at a frequency of 2.55 THz. The method is based on frequency modulation of the laser emissionm across the absorption line. The resulting derivativelike signal is used as an error signal for a control loop that keeps the laser frequency at maximum absorption. The unstabilized laser that is operated in a pulse tube cooler has frequency fluctuations of 15 MHz, which are reduced to 300 kHz with the control loop in action. The line shape of the locked signal is Gaussian.

Item URL in elib:https://elib.dlr.de/66578/
Document Type:Article
Title:Submegahertz frequency stabilization of a terahertz quantum cascade laser to a molecular absorption line
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Pavlov, Sergei G.Sergeij.Pavlov (at) dlr.deUNSPECIFIED
Semenov, AlexeyAlexei.Semenov (at) dlr.deUNSPECIFIED
Mahler, L.NEST CNR-INFMUNSPECIFIED
Tredicucci, A.NEST CNR-INFMUNSPECIFIED
Beere, H. E.University of CambridgeUNSPECIFIED
Ritchie, D. A.University of CambridgeUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:19 February 2010
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:96
DOI :[doi:10.1063/1.3324703]
Page Range:071112-071112
Publisher:American Institute of Physics (AIP)
Status:Published
Keywords:THz, QCL, stabilization, 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 - Projekt SOFIA (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Richter, Dr.rer.nat. Heiko
Deposited On:07 Jan 2011 14:53
Last Modified:31 Jul 2019 19:29

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.