Soliton and Optical Frequency Comb formation in QCLs

The research activity is focused on modelling, theoretical analyses and numerical simulations of Quantum Cascade Lasers (QCLs).

The objective is to provide a decription of the phenomena leading to soliton formation in such devices, and to link the above phenomenologiy to the formation of optical frequency combs (OFC) associated to the the optical field profile in the frequency domain. Studies are carried on, concerning the tailoring of soliton shape, soliton motion and soliton clustering in order to a) control the pulsed dynamics and information associated and b) model  the OFC distribution.

QCL dynamics is also studied in configurations with optical feedback within regimes of self-mixing interferometry, applied to subdiffractive imaging, sensing and emission control

In collaboration with the Polytechnic of Turin, the Italian Institute of Techonology (IIT-Milan), the CNR-Nanoscience Institute, the M.I.T. (U.S.A.), the University Cote-d’Azur (F) and the Technical University of Wien (A)


Recent publications

H.Li et al, Real-time multimode dynamics of terahertz quantum cascade lasers via intracavity self-detection: observation of self mode-locked population pulsations Optics Express 30 (3), 3215-3229 (2022)

M Piccardo, et al., Roadmap on multimode light shaping Journal of Optics 24 (1), 013001 (2022)

EAA Pogna, et al. Terahertz near-field nanoscopy based on detectorless laser feedback interferometry under different feedback regimes APL Photonics 6 (6), 061302 (2021)

L Columbo, et al., Unifying Frequency Combs in Active and Passive Cavities: Temporal Solitons in Externally Driven Ring Lasers Physical Review Letters 126 (17), 173903 (2021)

F Prati,et al., Soliton dynamics of ring quantum cascade lasers with injected signal Nanophotonics 10 (1), 195-207 (2021)

C Silvestri, eta al. Coherent multi-mode dynamics in a quantum cascade laser: amplitude-and frequency-modulated optical frequency combs Optics Express 28 (16), 23846-23861 (2020)

M Brambilla,et al. Versatile Multimodality Imaging System Based on Detectorless and Scanless Optical Feedback Interferometry—A Retrospective Overview for A Prospective Vision Sensors 20 (20), 5930 (2020)

People involved:

Massimo Brambilla


Research units: