交叉关联噪声驱动的饱和激光模型的随机共振现象研究

Stochastic resonance for a saturation laser model with cross-correlation between additive and multiplicative noises

考虑噪声对不同的激光模式的影响是统计物理学中研究的一个热点问题.以关联噪声驱动的饱和激光模型的场强方程为基础,导出光强满足的有周期信号策动的郎之万方程,采用线性化方法得到了受信号调制后系统的输出功率谱和信噪比,研究了交叉关联高斯白噪声驱动的饱和激光模型系统的随机共振现象.结果表明信噪比随量子噪声强度,泵噪声强度变化产生随机共振,输入信号的振幅,噪声关联强度对信噪比具有重要的影响.文章对认识饱和模型激光系统的随机动力学性质,提高饱和模型激光系统的工作效率和输出稳定性等都具有重要的理论指导意义.

Stochastic resonance for a saturation laser model with cross - correlation between additive and muhiplicative noises is investigated. On the basis of the of the field equation of the saturation laser model with cross- correlation between additive and multiplicative noises, we obtain the Langevin equation on I corre- sponding it added a input period signal and the signal - to - noise ratio （SNR） of the laser system using the linearization method. The quantum noise strength D and the pump noise strength Q can make the interesting stochastic resonance phenomena of the saturation laser occur, in which the cross - correlation strength）t, the [ ] amplitude of the input signal B general important effects for the saturation laser system.