Probing and controlling the comb features of a THz QCL
Authors: Consolino L., Campa A., Cappelli F., Pastor P.C., Bartalini S., Scalari G., Rosch M., Beck M., Faist J., de Natale P.
Autors Affiliation: INO, Istituto Nazionale di Ottica – CNR, Largo E. Fermi 6, Firenze, I-50125, Italy; LENS, European Laboratory for Nonlinear Spectroscopy, Via N. Carrara 1, Sesto Fiorentino (FI), I50019, Italy; ETH Zurich, Institute of Quantum Electronics, AugustePiccardHof 1, Zurich, 8093, Switzerland
Abstract: Single mode THz QCLs have already shown their huge potential for metrological grade THz spectroscopy [1,2] while, on the contrary, continuous-wave multimode broadband operation has only recently been demonstrated . These sources show a comb emission regime with up to 600 GHz spectral coverage. This kind of sources are very promising for metrological-grade applications, such as high precision spectroscopy, but their comb-like features and controllability have not been yet characterized. © 2017 IEEE