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

fYear

2010

fDate

12-14 Sept. 2010

Firstpage

251

Lastpage

252

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Thz Radiation (TERA), 2010 2nd IEEE International Workshop

Conference_Location

Sevastopol

Print_ISBN

978-1-4244-8296-2

Type

conf

DOI

10.1109/TERA.2010.5619933

Filename

5619933