【摘要】 把周期信号输入单模激光,对激光增益模型中的乘法噪声项取一级近似通过计算相关函数得到功率谱,发现输出信号是洛伦兹型的.信噪比随抽运噪声强度和量子噪声强度的变化均出现随机共振,但共振峰对应的噪声强度比零级近似下的小.更多还原

【Abstract】 By adding periodic signal into single-mode laser,and taking the first-order approximation to the multiplication noise of the laser gain-noise model,we find that the output signal is of the Lorentz type when we obtain power spectrum by calculating the correlated function.The signal-to-noise ratio shows the stochastic resonance occurs with the variations of intensities of the pump noise and quantum noise,and the noise intensity of resonant peak is smaller than that under the zeroth approximation.更多还原