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Laboratoire IEMN– UMR 8520
Avenue Henri Poincaré
Tél : +33 (0)3 20 19 79 88
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Stefano Barbieri received his PhD in Physics in 2000 at Scuola Normale Superiore (Pisa, Italy) In 2000, he joined as a Research Scientist Orbisphere SA (Geneva, Switzerland), where he focused on the development of gas-sensing systems based on laser photo-acoustic spectroscopy. In 2002, he joined TeraView Ltd. (Cambridge, UK) where he coordinated an R&D activity focused on THz QCLs in collaboration with the Cavendish Laboratory, of Cambridge University of Cambridge. In 2004, he was awarded a three year Industry-fellowship from the Royal Society aimed at promoting technology transfer between industry and academic institutions. In December 2005, he was recruited by CNRS in France. From 2005 to 2016 he has been in charge of THz research at the MPQ Laboratory at the University of Paris Diderot (Paris, France). He is presently a member of the THz-Photonics group at IEMN (Lille, France).


Current research interests

–    THz quantum cascade lasers: microwave modulation, active mode-locking and stabilisation
–    Electro-optic and photoconductive sampling of THz and sub-mm coherent sources
–    Development of ultrafast mid-infrared detectors


Five most recent selected publications

[1] A Mottaghizadeh, D. Gacemi, P. Laffaille, H. Li, M. Amanti, C. Sirtori, G. Santarelli, W. Hansel, R.   Holzwart, L. H. Li, E. H. Linfield, and S. Barbieri “5ps-long terahertz pulses from an active-mode locked quantum cascade laser” Optica 4, 170 (2016).
[2] H. Li, P. Laffaille, D. Gacemi, M. Apfel, C. Sirtori, J. Leonardon, G. Santarelli, M. Rösch, G. Scalari, M.   Beck, J. Faist, W. Hänsel, R. Holzwarth, and S. Barbieri, “Dynamics of ultra- broadband terahertz quantum cascade lasers for comb operation”, Opt. Expr. 23, 33270 (2015).
[3] C. Sirtori, S. Barbieri, and R. Colombelli, “Wave engineering with terahertz quantum cascade lasers,” Nature Photon. 7, 691-701 (2015). doi:10.1038/nphoton.2013.208
[4] M. Ravaro, S. Barbieri, G. Santarelli, V. Jagtap, C. Manquest, C. Sirtori, S. P. Khanna, and E. H. Linfield, “Measurement of the intrinsic linewidth of terahertz quantum cascade lasers using a near-IR frequency comb,” Opt. Expr., 20, 25654 (2012).
[5] S. Barbieri, M. Ravaro, P. Gellie, G. Santarelli, C. Manquest, C. Sirtori, S. P. Khanna, E. H. Linfield, and A. G. Davies, “Coherent sampling of active mode−locked terahertz quantum cascade lasers and frequency synthesis,” Nature Photon. 5, 306-313 (2011). doi:10.1038/nphoton.2011.49