染料激光模型中包含两种噪声的一级相变

对包含两种噪声的染料激光模型，应用泛函导数法得到光强分布的Fokker—Planck方程。计算了激光场定态分布函数，研巍了这种模型的一级相变现象。结果表明，泵浦参量和泵浦噪声的相关时间是激光中出现一级相变的关键因素，量子噪声对一级相变也有影响。

First-order Phase Transition of Two Kinds of Noise in the Dye-laser Model

Functional derivation is employed to obtain the Fokker-Planck equation for intensity distribution of dye-laser model simultaneously driven by colored pump noise and quantum noise. The stationary intensity distribution of the model is calculated. The first-order phase transition of model is studied. It is shown that the pump parameter and correlation time of the pump noise are the major factors of the first-order phase transition. Quantum noise has influence on the first-order phase transition.