In the third part of this chapter, passive Q-switch is discussed. And when the Cr~(4+):YAG is placed at the Brewster angle is also discussed here.

• 本章第三部分首先讨论了Cr4+:YAG的晶体特性以及其作为被动调Q晶体时的特性,并讨论了按布儒斯特角摆放时作为调Q晶体和布儒斯特片时的Cr4+:YAG特征。