الوصف

A Nd:YAG Laser Crystal l(neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O*2) is used as a lasing medium for solid-state lasers. The dopant typically is around 1%.

Nd:YAG laser crystals are optically pumped using a flashlamp or laser diodes. They are one of the most common types of laser, and are used for many different applications.

Nd:YAG lasers typically emit light with a wavelength of ***4 nm, in the infrared. However, there are also transitions near **0, ***0, ***0, and ***0 nm. Nd:YAG lasers operate in both pulsed and continuous mode.
 
Nd:YAG absorbs mostly in the bands between ******0 nm and ******0 nm. At low current densities krypton flashlamps have higher output in those bands than do the more common xenon lamps, which produce more light at around **0 nm. The former are therefore more efficient for pumping Nd:YAG lasers.

The amount of the neodymium dopant in the material varies according to its use. For continuous wave output, the doping is significantly lower than for pulsed lasers. The lightly doped CW rods can be optically distinguished by being less colored, almost white, while higher-doped rods are pink-purplish.