Cr^(4+)∶YAG在Nd∶YAG激光器中的被动调Q

Cr^(4+):YAG Passive Q-Switching in Nd:YAG Laser

在考虑Ｃｒ４＋ ∶ＹＡＧ激发态吸收的情况下，给出调Ｑ 速率方程组，并且利用计算机对该方程组进行数值求解． 从而，描绘出调Ｑ过程中相关粒子数的变化情况，得到脉冲宽度、脉冲能量、峰值光功率的理论值． 采用Ｃｒ４＋ ∶ＹＡＧ 晶体作为可饱和吸收体，在脉冲式Ｎｄ∶ＹＡＧ 中实现了１．０６ μｍ 激光的调Ｑ运转． 实验结果与理论结果相符合．

Taking into account the absorption of Cr 4+ ∶YAG in excitaion state,the Q switching rate equations are given and the equations are solved numerically by using computer.Thus the change of correlated population during Q switching is described and the theoretical values of pulse width and energy of pulse and peak luminous power are obtained.By adopting Cr 4+ ∶YAG as saturable absorber,the Q switching operation of 1 06μm laser is realized in pulsive Nd∶YAG.