Product Description

YAG or fiber beam expander is widely used in machines, not just marking machine, but wielding and drilling machine.
As the output beam from fiber and YAG rod is thin, if we want to have a better performance with the focus lens, we have to expander the beam first, that makes the beam expander useful in so many machines.
YAG beam expanders are designed to increase the diameter of a beam to a larger output beam. At the same time, the laser beam will be collimated into parallel beam, When the lager and parallel beam reaches into the f-theta lens, the spot can be smaller than the original one.