Title :
Controlling the emission of THz Quantum Cascade Lasers
Author :
Xu, Jie ; Mahler, L. ; Green, Ron ; Mauro, C. ; Losco, T. ; Tredicucci, A. ; Beltram, F.
Author_Institution :
NEST CNR-INFM, Pisa
Abstract :
The development of quantum cascade lasers (QCLs) operating at terahertz frequencies (THz) is proceeding at a very rapid pace. For their successful practical implementation, specific requirements have now to be addressed, particularly concerning the spectral properties of the emitted radiation. Single-mode THz lasers with external cavity have been achieved. Optical self-mixing has been observed in THz QCLs in the presence of an external cavity for insight into the linewidth enhancement.
Keywords :
microcavity lasers; quantum cascade lasers; spectral line breadth; submillimetre wave imaging; submillimetre wave lasers; THz quantum cascade laser; emitted radiation; linewidth enhancement; optical self-mixing; single-mode THz laser; spectral property; terahertz frequency; Face detection; Gas lasers; Laser modes; Laser tuning; Mirrors; Optical control; Optical feedback; Optical refraction; Optical variables control; Quantum cascade lasers;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368739
