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用二维气体激光模型对量子噪声的实部和虚部存在耦合的激光场进行了理论分析，通过福克-普朗克方程导出了定态激光场强度和位相的分布函数，算出了定态激光强度和位相的平均值，方差和偏斜度。与量子噪声的两个分量为独立随机变量的激光场相比，噪声间的耦合极大地改变了激光场强度和位相的涨落，并引起了激光场强度与位相之间的耦合。
The two-dimensional gas laser model is used to analyze the coupled laser field in real and imaginary parts of quantum noise. The distribution of stationary laser field intensity and phase distribution is derived by Fokker- Laser intensity and phase average, variance and skewness. Compared with the laser field with two components of quantum noise as independent random variables, the coupling between the noise greatly changes the laser field intensity and the phase fluctuation, and causes the coupling between the laser field intensity and the phase.