Statistical fluctuations in a saturation laser model with correlated noises

• 来源期刊: 中国物理（英文版）
• 关键词: saturation laser model correlated noises fluctuation phenomena
• 年，卷（期）: 2006,（12）
• 页码范围: 2861-2866
• 页数: 6页
• 语种: 英文

摘要

We study the effects of correlations between quantum and pump noises on fluctuations of the laser intensity in a saturation laser model. An approximative Fokker-Planck equation and analytic expressions of the steady-state probability distribution function (SPD) of the laser system are derived. Based on the SPD, the normalized mean, the normalized variance, and the normalized skewness of the steady-state laser intensity are calculated numerically. The results indicate that (i) the correlation strength λ of correlated noises always enhances the fluctuation of laser intensity;(ii) the correlation time τ of correlated noises strengthens the fluctuation of laser intensity for the below-threshold case but τ weakens it for the above-threshold case.