Na próxima segunda-feira, 25/11, teremos o Colóquio apresentado pelo Prof Marcio Heraclyto Gonçalves de Miranda com título “Pentes de Frequências e Caos Determinístico”.
O colóquio é realizado na segunda-feira as 11h no auditório-Torre A da UACSA-UFRPE.
Contamos com a presença de todos!
Resumo da palestra:
We experimentally study the nonlinear dynamics of a femtosecond ytterbium doped mode-locked fiber laser. With the laser operating in the pulsed regime a route to chaos is presented, starting from stable mode-locking, period two, period four, chaos and period three regimes. Return maps and bifurcation diagrams were extracted from time series for each regime. The analysis of the time series with the laser operating in the quasi mode-locked regime presents deterministic chaos described by an unidimensional Rossler map. A positive Lyapunov exponent λ = 0.14 confirms the deterministic chaos of the system. We suggest an explanation about the observed map by relating gain saturation and intra-cavity loss.