The ignition of Quantum Cascade Lasers can occur from a state oscillating field domains. Here, the interplay between lasing and kinetics traveling domain boundaries provides complex oscillation scenarios. We analyze our numerical findings in detail for device operating at terahertz frequencies manifest chaotic evolution by positive Lyapunov exponents. This shows that these important devices exh...

An analysis of the nonlinear dynamics of current modulated weakly index-guided VCSELs in a multi{transverse mode regime is performed by using a model that takes into account all the transverse modes supported by the waveguide. Nonlinear dynamical behavior is studied when applying current modulation of high frequency and large modulation depth. Chaotic behavior is obtained in the multitransverse...