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A compact, continuous-wave terahertz source based on cascade laser and a miniature cryocooler

Richter, Heiko and Greiner-Bär, Michael and Pavlov, Sergey and Semenov, Alexei D. and Wienold, Martin and Schrottke, Lutz and Giehler, M. and Hey, R. and Grahn, H. T. and Huebers, H.-W. (2010) A compact, continuous-wave terahertz source based on cascade laser and a miniature cryocooler. IRMMW 2010, 5-10 Sept 2010, Rome, Italy.

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Abstract

We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum-cascade laser (QCL) with a compact, low-input-power Stirling cooler. The QCL, which is based on a two-miniband design, has been developed for high output and low electrical pump power. Special care has been taken to achieve a good thermal coupling between the QCL and the cold finger of the cooler. The whole system weighs less than 15 kg including the cooler and power supplies. The maximum output power is 8 mW at 3.1 THz. With an appropriate optical beam shaping, the emission profile of the laser is fundamental Gaussian. The applicability of the system is demonstrated by imaging and molecular-spectroscopy experiments.

Document Type:Conference or Workshop Item (Speech)
Title:A compact, continuous-wave terahertz source based on cascade laser and a miniature cryocooler
Authors:
AuthorsInstitution or Email of Authors
Richter, HeikoHeiko.Richter@dlr.de
Greiner-Bär, Michaelmichael.greiner-baer@dlr.de
Pavlov, Sergeysergeij.pavlov@dlr.de
Semenov, Alexei D.alexei.semenov@dlr.de
Wienold, MartinPDI
Schrottke, LutzPDI
Giehler, M.PDI
Hey, R.PDI
Grahn, H. T.PDI
Huebers, H.-W.heinz-wilhelm.huebers@dlr.de
Date:9 September 2010
Status:Published
Keywords:THz, quantum cascade laser, miniature cryocooler
Event Title:IRMMW 2010
Event Location:Rome, Italy
Event Type:international Conference
Event Dates:5-10 Sept 2010
Organizer:ENEA under the technical co-sponsorship of the IEEE Microwave Theory and Techniques Society
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: Dr.rer.nat. Heiko Richter
Deposited On:04 Jan 2011 22:39
Last Modified:12 Dec 2013 21:09

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