Theoretical and experimental study of stochastic effects on polarization rotation in a vectorial bistable laser

摘要: We investigate the two-dimensional optical rotor of a weakly modulated vectorial bistable laser submitted to single or multiple stochastic perturbations. In Langevin-type equation role an even odd input forcing function on system dynamics is isolated. Through these two inputs and magnetic natures we verify that resonance exists only when periodic modulation acts parity input. When mutually correlated noises are simultaneously functions opposite parities, find critical regime noise interplay whereby one stable state becomes noise-free. this case, residence time light vector in noise-free diverges which leads collapse output signal-to-noise ratio. But, also obtained drives both functions, if symmetry broken through independent lever control, can recover switching cycle due new response mechanism, namely, dual response, with specific ratio expression. Both theoretical analysis experiment show now displays robust behavior for large rangemore » amplitude, plateau respect signal amplitude. Furthermore, isolate original signature synchronization mechanism residence-time distribution leading broadband frequency range. These effects double well potential generic nature could be found other nonlinear systems.« less