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研究了由白泵噪声引起的增益系数的涨落对计入了全饱和效应的双模激光行为的影响。获得了在中性模间耦合强度附近光强定态分布的近似表达式。研究表明，单模光强分布在两模模间耦合强度稍弱于中性耦合（对应非均匀展宽介质激光）时，有类一级相变发生。
The influence of the gain coefficient fluctuation caused by white pump noise on the bimodal laser behavior, which takes into account the full saturation effect, is studied. The approximate expression of the stationary state of light intensity near the neutral mode coupling intensity is obtained. The results show that the first-order phase transition occurs when the single-mode light intensity distribution is slightly weaker than the neutral coupling (corresponding to non-uniform broadened medium laser).