The method for third harmonic generation of large-aperture high-power solid laser is described which is the second nonlinear effect of two cascade crystals in this paper.

• 叙述了大口径高功率固体激光器，利用两块级联晶体的二阶非线性效应，对激光输出进行谐波转换，实现三次谐波输出的方法。