What are the uses of an aperture and grating in a laser device?
modulation and so on, a lot of space!
such as fiber laser inside the fiber grating, chirped grating laser in the giant inside of, can also be used for optical grating, optical pulse compression, optical phase
The effect of grating is much, in the inside, he is used to provide dispersion
Of course, the diaphragm is used to control the beam width in the light path.
