Title :
A compact THz source for imaging and spectroscopy
Author :
Richter, H. ; Greiner-Bär, M. ; Pavlov, S.G. ; Semenov, A.D. ; Wienold, M. ; Schrottke, L. ; Giehler, M. ; Hey, R. ; Grahn, H. ; Hübers, H.W.
Author_Institution :
Inst. of Planetary Res., German Aerosp. Center (DLR), Berlin, Germany
Abstract :
We report of a easy-to-use terahertz radiation source, which combines a QCL operating at 3.1 THz with a compact, low-input-power Stirling cooler. The QCL, which is based on a two-miniband design, has been developed for high output powers and low electrical pump power. The whole system weighs less than 15 kg including cooler, power supplies etc. The peak output power is 8 mW at 3.1 THz. The applicability of the system is demonstrated by imaging and molecular spectroscopy experiments.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; measurement by laser beam; microwave photonics; quantum cascade lasers; terahertz spectroscopy; terahertz wave imaging; GaAs-AlGaAs; THz imaging; THz spectroscopy; compact THz source; frequency 3.1 THz; low electrical pump power; low-input-power Stirling cooler; power supply; terahertz quantum cascade lasers; two-miniband design; Cooling; Helium; Imaging; Laser beams; Measurement by laser beam; Power generation; Quantum cascade lasers;
Conference_Titel :
Thz Radiation (TERA), 2010 2nd IEEE International Workshop
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-8296-2
DOI :
10.1109/TERA.2010.5619933
