Supplementary Information: Modulation Properties and Nonlinear Dynamics Induced by Optical Feedback in Distributed-Feedback Quantum Cascade Lasers

Supplemental Information containing a detailed description of the Effective Semiconductor Equations (ESMBEs) utilized for performing numerical simulations, together with a detailed explanation of the parameters used in simulations. It also contains additional analysis concerning the intrinsic intensity modulation response (IMR) of quantum cascade laser (QCL) under investigation. Finally, there are additional detals on the procedure followed for the computation of the correlation dimension of the dynamics of the analyzed time series.