YAG laser welding
YAG is an acronym for yttrium, aluminum, and garnet. Whereas CO2 laser welding is a typical form of gas laser welding, YAG laser welding is a typical form of solid-state laser welding. A flash lamp is used for excitation, enabling laser oscillation at short wavelengths.
With CO2 laser welding, the transmission method is limited to mirrors, but YAG laser welding enables transmission using mirrors or optical fibers, with the method being available as needed. Another advantage of YAG laser welding is that the wavelength is as short as 1/10 that of a CO2 laser, and the energy absorption rate to the base material is high.
- Full reflector
- Laser beam
- Excitation light source (lamp, LD)
- YAG crystal
- Partial reflector
- Optical fiber