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Stabilizing A Terahertz Quantum-cascade Laser Using Near-infrared Optical Excitation

Alam, Tasmim and Wienold, Martin and Lü, Xiang and Schrottke, Lutz and Grahn, Holger T. and Hübers, Heinz-Wilhelm (2021) Stabilizing A Terahertz Quantum-cascade Laser Using Near-infrared Optical Excitation. 44th International Conference on Infrared, Millimeter, and Terahertz Waves, 1-6 September, Paris, France. doi: 10.1109/IRMMW-THz.2019.8873858. ISBN 978-1-5386-8285-2. ISSN 2162-2035.

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Abstract

We demonstrate a technique to simultaneously stabilize the frequency and output power of a terahertz quantum-cascade laser. The technique exploits frequency and power variations upon near-infrared excitation and does not require an external terahertz optical modulator. By locking the frequency to a molecular absorption line, we obtain a linewidth of about 260 kHz and root-mean-square power fluctuations as low as 0.03%.

Item URL in elib:https://elib.dlr.de/141631/
Document Type:Conference or Workshop Item (Speech)
Title:Stabilizing A Terahertz Quantum-cascade Laser Using Near-infrared Optical Excitation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Alam, Tasmimtasmim.alam (at) dlr.deUNSPECIFIED
Wienold, MartinMartin.Wienold (at) dlr.deUNSPECIFIED
Lü, Xianglue (at) pdi-berlin.deUNSPECIFIED
Schrottke, Lutzlutz (at) pdi-berlin.deUNSPECIFIED
Grahn, Holger T.htgrahn (at) pdi-berlin.deUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:12 April 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1109/IRMMW-THz.2019.8873858
ISSN:2162-2035
ISBN:978-1-5386-8285-2
Status:Accepted
Keywords:QCL stabilization
Event Title:44th International Conference on Infrared, Millimeter, and Terahertz Waves
Event Location:Paris, France
Event Type:international Conference
Event Dates:1-6 September
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Terahertz spectrometer for atomic oxygen in the mesosphere/thermosphere
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Alam, Tasmim
Deposited On:12 Apr 2021 11:24
Last Modified:12 Apr 2021 11:24

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