中国物理B ›› 2009, Vol. 18 ›› Issue (5): 1755-1760.doi: 10.1088/1674-1056/18/5/007
张莉1, 陈德彝2
Chen De-Yi(陈德彝)a) and Zhang Li(张莉)b)†
摘要: This paper investigates the phenomenon of stochastic resonance in a single-mode laser driven by time-modulated correlated coloured noise sources. The power spectrum and signal-to-noise ratio R of the laser intensity are calculated by the linear approximation. The effects caused by noise self-correlation time τ1, τ2 and cross-correlated time τ3 for stochastic resonance are analysed in two ways: τ1, τ2 and τ3 are taken to be the independent variables and the parameters respectively. The effects of the gain coefficient Γ and loss coefficient K on the stochastic resonance are also discussed. It is found that besides the presence of the standard form and the broad sense of stochastic resonance, the number of extrema in the curve of R versus K is reduced with the increase of the gain coefficient Γ.
中图分类号: (Dynamical laser instabilities; noisy laser behavior)