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提出一种实现简并光学参量振荡器混沌反控制的方法,用正弦信号调制简并光学参量振荡器的基模衰减率,使简并光学参量振荡器从定态输出转化为混沌态.数值模拟结果表明,选择不同的调制幅度和调制角频率,只要满足系统的最大李雅谱诺夫指数大于零,即可实现不同的混沌轨道重构.通过比较最大李雅谱诺夫指数λmax随调制幅度和调制角频率变化曲线,指出系统从周期态调制到混沌态比从无亚谐波输出的定态调制到混沌态更容易,有更宽的调制幅度和调制角频率选择范围.
A method to realize chaos anti-control of degenerate optical parametric oscillator is proposed. By using sinusoidal signal to modulate the fundamental mode attenuation rate of degenerate optical parametric oscillator, degenerate optical parametric oscillator is transformed from steady state output to chaos state. The results show that different chaotic orbit reconstruction can be realized as long as the maximum Lyapunov exponent of the system is larger than zero by choosing different modulation amplitude and modulation angular frequency.Comparing the maximal Lyapunov exponents λmax with the modulation amplitude It is found that it is easier for the system to modulate from periodic modulation to chaos than from the steady-state modulation without chaos harmonic output to the chaotic state, and has a wider modulation range and modulation angular frequency selection range.