有限差分法求解速率方程,用于各种激光器及放大器的数值求解。-Slove rate equation with finite difference method

被动条Q，速率方程求解，模拟调Q过程，输出调Q结果，激光领域(passive Q switch for NdYAG lasers with different saturable absorbers)

龙格库塔法求解常微分方程，matlab程序，解决速率方程的计算(Runge-Kutta method for solving ordinary differential equations, matlab program, to solve the calculation of the rate equation)