3 ms·
Yes, to raise the temperature of a material in which ignition can occur. I know the cheap hobby laser machines use a 405-450nm module, which works decent on st
by xellisx 7y ago
Yes, to raise the temperature of a material in which ignition can occur.
I know the cheap hobby laser machines use a 405-450nm module, which works decent on stuff like wood. Now since it's about half the wavelength, is it more affective in cutting / etching these materials with a lower optical output power.
- wbl 7y agoThat's just straight up energy transfer. Doesn't matter exactly what wavelength you use provided you dump enough energy in, and this one is so inefficient it doesn't make sense.
- semi-extrinsic 7y agoIf you look at CO2 lasers, at 40W ($350 on eBay) you can cut plywood, at 150W ($5000 on eBay) you can cut metal. Both of those are 1040 nm. The 450 nm modules you can get up to 5W ($100 on eBay), but those can hardly cut anything, they're more like engravers.
- deleted 7y ago[deleted]
- mdturnerphys 7y agoCO2 lasers are typically at 10.6 microns. They can cut metal but you need at least 100W and RF pumping. Metal-cutting lasers are more commonly fiber lasers with wavelengths of ~1050nm.
- dhabxkxbx 7y ago“ 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