A single collimating lens has been designed to reduce the Angleofdivergence.
采用单透镜准直系统进行发散角的压缩。
2
After the focal plane, the focused hollow beam propagated according to a constant Angleofdivergence, the DSS become larger, and the intensity become weaker.
经过焦点后,这一聚焦中空光束将以一定的角度发散,它的DSS会变得越来越大,光强度变得越来越弱。
3
The result indicates that the single pulse energy and the Angleofdivergence of output laser decrease, but the pulse width of output laser increases with the increase of the OPO cavity length.