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用密度矩阵的方法从理论上分析了不同频率的两个激光场混合泵浦的光纤放大器中，由光场诱导的原子相干效应。并由此引入相干修正因子，通过修正的速率方程讨论了两光场与原子的相干作用对放大器增益的影响。
In this paper, the density-matrix method is used to theoretically analyze the atomic coherent effect induced by the light field in a fiber-optic amplifier with two laser fields of different frequencies. The correlative correction factor is introduced, and the influence of the coherence between the two light fields and the atom on the gain of the amplifier is discussed through the modified rate equation.