I’ve noted that some posts elsewhere on the world wide interweb reference a GaAs lens for CO2 laser use. The posts seem to indicate an improvement in performance, often a goal for me, so I checked out the offerings.
Some sites are just declarative, providing specifications, costs, etc, while at least one other suggests that laser power of 100 Watts to 180 Watts is optimum for this type of lens.
Why would a lens “require” a higher power? What happens if one uses a lens in a 60 Watt machine?
Does anyone have experience with this type of lens?