“ is it more affective in cutting / etching these materials with a lower optical output power.” Probably because it’s more likely to be absorbed. On the other

“ is it more affective in cutting / etching these materials with a lower optical output power.” Probably because it’s more likely to be absorbed. On the other hand, absorption can’t be > 100%. So a longer wavelength laser an cut just as well for the same power as long as the mtls absorbs all the photons