A YAG (Yttrium Aluminium Garnet) laser is a solid-state laser whose basic elements are doped
. Yttrium ions in YAG lasers can be replaced with rare earth ions without affecting the lattice structure. YAG forms the basic structure for power lasers that emit laser light at 1,064 nm. Other emission wavelengths include 946 nm, 1,123 nm and 1,319 nm. YAG lasersare
suitable for large-scale production and use in discrete optical components. However, they can also be monolithically constructed, for example as microchip lasers.