Cr4:YAG被动调Q激光器脉冲波形数值模拟及优化

从Nd:YAG晶体Cr4+:YAG被动调Q激光耦合速率方程组出发，数值求解该方程组，获得了激光脉冲的波形。从能量分布和时间分布的角度分析了被动调Q激光脉冲波形的不对称性。定义了描述脉冲波形的对称因子并分析了其与饱和吸收体初始透过率和输出镜反射率的关系。提出了计算脉冲宽度的新方法，重新计算了在脉冲波形非对称条件下的脉冲宽度及其与饱和吸收体初始透过率和输出镜反射率的关系。提出了优化脉冲波形和脉宽的简便方法。

Numerically modeling and optimizing Pulse-shape of Cr4+:YAG Q-switched lasers

In order to study the symmetry property of a single pulse for passively Q-switched lasers,the coupled rate equations were solved numerically and the temporal profile of laser pulse was obtained.The relationship between the symmetry property of a single pulse and the parameters of absorber and output coupler was presented and the pulsewidth was recalculated accounting for the asymmetry property of laser pulse.The relationship between pulsewidth and parameteres of absorber and output coupler was presented als...