Bursting behavior in degenerate optical parametric oscillator under noise

The distribution of Lyapunov exponents is calculated in the two-parameter region, and parameter is set carefully to reproduce bursting state from the optical parametric oscillator thus can be consistent with the previous experiments. The input field amplitude is changed to trigger different modes of outputs and then external noise is imposed to detect the transition of subharmonic mode and fundamental mode, it could be helpful to understand the potential mechanism for electromagnetic radiation-induced transition of electrical activities in neurons.