THz time-domain spectroscopy of THz quantum cascade lasers

Author

Darmo, J. ; Kröll, J. ; Martl, M. ; Dhillon, S.S. ; Marcadet, X. ; Calligaro, M. ; Sirtori, C. ; Unterrainer, K.

Author_Institution

Photonics Inst., Vienna Univ. of Technol., Vienna

fYear

2007

fDate

2-9 Sept. 2007

Firstpage

55

Lastpage

55

Abstract

Summary form only given. We have combined few-cycle THz spectroscopy with quantum cascade laser (QCL) technology. This combination allows to perform unique THz time-domain measurements of THz-QCLs. By coupling the few-cycle THz pulse into the waveguide of the QCL, the processes within the active zone can be probed. This gives direct information regarding the energy, dynamics and coherence of transitions in the QCL structure.

Keywords

quantum cascade lasers; submillimetre wave lasers; submillimetre wave spectroscopy; THz spectroscopy; quantum cascade lasers; time-domain measurements; time-domain spectroscopy; Coherence; III-V semiconductor materials; Optical losses; Optical waveguides; Performance evaluation; Photonics; Quantum cascade lasers; Spectroscopy; Stimulated emission; Time domain analysis;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICIMW.2007.4516392

Filename

4516392