Stochastic resonance in a single-mode laser driven by frequency modulated signal and coloured noises

• 来源期刊: 中国物理B（英文版）
• 关键词: Gaussian coloured noise single-mode laser stochastic resonance frequency modulated signal
• 年，卷（期）: 2009,（3）
• 页码范围: 952-957
• 页数: 6页
• 语种: 英文

摘要

By adding frequency modulated signals to the intensity equation of gain-noise model of the single-mode laser driven by two coloured noises which are correlated, this paper uses the linear approximation method to calculate the power spectrum and signal-to-noise ratio (SNR) of the laser intensity. The results show that the SNR appears typical stochastic resonance with the variation of intensity of the pump noise and quantum noise. As the amplitude of a modulated signal has effects on the SNR, it shows suppression, monotone increasing, stochastic resonance, and multiple stochastic resonance with the variation of the frequency of a carrier signal and modulated signal.