Numerical investigation of the nonlinear dynamics of a hybrid acousto-optic Bragg cell with a variable feedback gain

Abstract

Since around 1979, the operation of an acousto-optic Bragg cell under positive first-order feedback via amplification and delay in the loop has been studied extensively by several groups [1][2][3]. It is well-known that this system offers interesting dynamical properties, including bistability and chaos under a range of parameter thresholds. Thus, for fixed values of the bias voltage ( 0  ), feedback gain (  ), feedback time delay (TD), incident optical intensity (Iinc) and initial first-order intensity (I1(0)), the hybrid system may be operated in regimes where it is bistable (thus leading to possible logical applications), or chaotic (within which it may exhibit period-2, period-3 and similar characteristics). In recent work, the analysis of the system was extended to include bistable maps and bifurcation specific to chaotic regimes whereby chaotic passbands and stopbands were established. Additionally, the system was utilized for signal 42