two things:
Lapidary Skills for making the microchip.
Dielectric coating application for the mirrors.
Home lapidary setups are pricey. Making laser grade flats is not easy. Coatings are done by expensive professionals.
if you mean buying a Green MCA dpss crystal assembly from Ebay,and gluing it to a heat sink, then diode pumping it, that is a easy,rewarding, project. You then just need brass and a drill press on the mechanical side.
Microchip laser has unique connotations, generally means making subnanosecond pulses by very thin precision crystals.
Steve
Last edited by mixedgas; 10-06-2023 at 08:55.
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...