对实际固体激光器谐振腔的特性分析常常采用经验公式的模型进行预测和研究.从非稳腔衍射积分方程和激光介质速率方程出发,利用GLAD程序计算并模拟了电光调Q非稳折叠腔Nd:YAG激光器的输出光束特性,得到了近场和远场的能量分布以及脉冲宽?炔ㄐ?计算结果对试验具有指导意义.

Generally Q-switchedlaser is always characterized with empirically derived mathematical model. In this paperlaser action at Q-switch with flashlamp pumping in Nd:YAG laser rod has been modeled andsimulated with the code GLAD. The laser uses folded positive branch confocal unstableresonator with electro-optical Q-switcher. It provides an output pulse width of 4.5 ns at 1 Hz repetition rate and the full width of 0.21 mm at 1/e2 of the peak energy with anear-diffraction-limited beam. The results calculated can be used to direct designs andexperiments for solid-state laser.