After the laser was invented,specially the second harmonic generation was realized,the way of paralled type Brewster cut mentioned above has been used continually to reduce the reflective losses for laser doubler during frequency conversion.

• 激光发明以后 ,特别是二次谐波发生实现以后 ,上述这种平行式布儒斯特角切割方法 ,也曾不断用来降低倍频器的反射损失。