Title :
Portable THz cyclotron resonance spectrometer in the range 3 to 30THz
Author :
Drachenko, O. ; Goiran, M. ; Rylkov, V.V. ; Barbieri, S. ; Sirtori, C. ; Schneider, H. ; Helm, M. ; Leotin, J.
Author_Institution :
Forschungszentrum Dresden Rossendorf, Inst. of Ion Beam Phys. & Mater. Res., Dresden
Abstract :
In this paper we present a very compact THz cyclotron resonance spectrometer that operates in the range 3 to 30 THz. This range is covered by choosing, respectively, several GaAs/AlGaAs quantum cascade lasers (QCL) for excitation, and either by Boron doped Silicon or Gallium doped Germanium photoconductors for detection. The system is made portable by aligning the quantum cascade laser, the sample, and the detector close to each other in a single insert. The spectrometer performance is demonstrated by measuring cyclotron resonance spectra for 2D-electron gas confined either naturally in InSe or inside an InAs quantum well between AlSb barriers.
Keywords :
cyclotron resonance; electron gas; photodetectors; quantum cascade lasers; radiofrequency spectrometers; submillimetre wave spectroscopy; 2D electron gas; AlSb-InAs-AlSb; GaAs-AlGaAs; Ge:Ga; InSe; Si:B; frequency 3 THz to 30 THz; photoconductors; quantum cascade lasers; terahertz cyclotron resonance spectrometer; Boron; Cyclotrons; Gallium arsenide; Germanium; Laser excitation; Photoconductivity; Quantum cascade lasers; Resonance; Silicon; Spectroscopy;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516811
