Introduction:
Er:YAG is an excellent laser crystal which lasers at 2940nm, it is the most important work material with 3 mm laser, unlike Nd:YAG laser, the output of an Er:YAG laser is strongly absorbed by water, 3 mm wavelength of light absorption coefficient is 100 times larger than 2 mm, 100 times larger than 1 mm, so 3mm laser is widely used in medical systems, it has advantages of high slope efficiency, operate well at room temperature, operate in a relatively eye-safe wavelength range。

Applications:
Medical laser systems (2940nm output wavelength), Dental Laser Systems etc.,