Jason A. C. Gallas

Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Chaotic phases of optically injected lasers and related models

A crucial ingredient for secure communications using lasers is that messages can only be recovered if the parameters of the transmitter and the receiver lasers are well matched and stable. From a theoretical point of view, parameters are also key elements which properly tuned allow one to reach operating regimes providing new insight in dynamical systems. Recently, we described the intricacies of chaotic phases of lasers and related models when ruled by sets of ordinary differential equations. Such diagrams contain many features which are not found in phase diagrams presently available in the literature. Of particular interest for applications is the structuring of the chaotic phases, phases which are still poorly understood. Wide regions supporting “smooth and continuous chaos” are of interest for efficient secure communication with lasers. Here, we report qualitative and metric properties of the evolution of periodic and chaotic oscillations when more than one parameter are tuned simultaneously. In particular, we show how to sweep large parameter ranges while keeping invariant desired properties of the solutions. (We thank support by CNPq and AFOSR).