摘要
对单模激光增益模型的光强方程加入调幅波,用线性化近似方法计算了以δ函数形式关联的两白噪声驱动下光强的输出功率谱及信噪比.结果表明,信噪比不但随着抽运噪声和量子噪声强度的变化出现随机共振,而且随着高频载波信号频率和低频调制信号频率的变化也出现了随机共振.
By adding modulated wave to the equation of the laser intensity of the gain-noise model of the single-mode lasers, we use the linear approximation method to calculate the power spectrum and signal-to-noise ratio（SNR） of the laser intensity, which is driven by two white noises correlated in the form of δ function. The result show that the SNR shows stochastic resonance with the varing of not only intensities of the pump noise and quantum noise, but also the frequency of a high frequency carrier signal and frequency of a low frequency periodical signal.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第12期6238-6242,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10275025)
湖北省教育厅科研基金(批准号:D200515008)资助的课题.~~
关键词
抽运噪声
单模激光
随机共振
调幅波
pump noise, single-mode laser, stochastic resonance, amplitude modulated wave
