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从激光动力学的自洽理论出发,推导出适用于含有可饱和吸收体的激光系统动力学方程组,研究了激光振荡的稳定性与系统参数的依赖关系,包括激励强度参数、饱和系数和能级寿命,并讨论了满足激光振荡稳定性的条件下B类激光的弛豫振荡特性。结果表明,增大激励强度与饱和系数有利于系统形成稳定的振荡输出,而且当激励强度超过一定阈值时,B类激光会产生弛豫振荡行为。
Based on the self-consistent theory of laser dynamics, the kinetic equations for laser systems containing saturable absorbers are deduced. The dependence of laser oscillation stability on system parameters is studied, including excitation intensity parameters, saturation coefficients and energy Class lifetime, and discussed the relaxation oscillation characteristics of the class B laser under the conditions of laser oscillation stability. The results show that increasing the excitation intensity and the saturation coefficient are beneficial to the stable oscillation output of the system. When the excitation intensity exceeds a certain threshold, the B type laser will produce relaxation oscillation.