S. Kumar, Q. Hu, and J. L. Reno, 186 K operation of terahertz quantum-cascade lasers based on a diagonal design, Applied Physics Letters, vol.94, issue.13, p.131105, 2009.
DOI : 10.1063/1.3114418

S. Barbieri, J. Alton, J. Fowler, H. E. Beere, E. H. Linfield et al., 2.9THz quantum cascade lasers operating up to 70K in continuous wave, Applied Physics Letters, vol.85, issue.10, p.1674, 2004.
DOI : 10.1063/1.1784874

URL : https://hal.archives-ouvertes.fr/hal-00005953

M. Ravaro, S. Barbieri, G. Santarelli, V. Jagtap, C. Manquest et al., Measurement of the intrinsic linewidth of terahertz quantum cascade lasers using a near-infrared frequency comb, Optics Express, vol.20, issue.23, p.25654, 2012.
DOI : 10.1364/OE.20.025654

URL : https://hal.archives-ouvertes.fr/hal-00813600

S. Barbieri, J. Alton, H. E. Beere, E. H. Linfield, S. Withington et al., Heterodyne mixing of two far-infrared quantum cascade lasers by use of a point-contact Schottky diode, Optics Letters, vol.29, issue.14, p.1632, 2004.
DOI : 10.1364/OL.29.001632

A. Barkan, F. K. Tittel, D. M. Mittleman, R. Dengler, P. H. Siegel et al., Linewidth and tuning characteristics of terahertz quantum cascade lasers, Optics Letters, vol.29, issue.6, p.575, 2004.
DOI : 10.1364/OL.29.000575

S. Barbieri, P. Gellie, G. Santarelli, L. Ding, W. Maineult et al., Phase-locking of a 2.7-THz quantum cascade laser to a mode-locked erbium-doped fibre laser, Nature Photonics, vol.16, issue.9, p.636, 2010.
DOI : 10.1038/nphoton.2010.125

URL : https://hal.archives-ouvertes.fr/hal-00639918

M. Ravaro, C. Manquest, C. Sirtori, S. Barbieri, G. Santarelli et al., Phase-locking of a 25 THz quantum cascade laser to a frequency comb using a GaAs photomixer, Optics Letters, vol.36, issue.20, p.3969, 2011.
DOI : 10.1364/OL.36.003969

URL : https://hal.archives-ouvertes.fr/hal-00639918

S. Barbieri, M. Ravaro, P. Gellie, G. Santarelli, C. Manquest et al., Coherent sampling of active mode-locked terahertz quantum cascade lasers and frequency synthesis, Nature Photonics, vol.18, issue.5, p.306, 2011.
DOI : 10.1038/nphoton.2011.49