详细分析了弛豫作用在高功率激光器中对反转粒子数的影响，在经典速率方程理论的基础上，推导了包含弛豫作用的一般性速率方程，讨论了弛豫效应与放大器总体性能之间的关系，并给出具体放大器的计算实例，对于优化放大器的设计具有实际意义 The effect of relaxation on the number of inversion particles in high power laser is analyzed in detail. Based on the classical rate equation theory, a general rate equation including relaxation effect is deduced. The relaxation effect and the overall performance of the amplifier are discussed And gives the calculation example of a specific amplifier, which is of practical significance for the design of an optimized amplifier