Er:YAGGo to Product Support
Highly doped (50%) Erbium YAG is a well-known laser source for producing 2940nm emission, commonly used in medical  (e.g. cosmetic skin resurfacing), and dental  (e.g., oral surgery) applications due to the strong water and hydroxyapatite absorption at this wavelength.
Low doped (< 1%) Erbium YAG has been studied as an efficient means to generate high power and high energy 1.6 micron ‘eye-safe’ laser emission thru 2 level resonant pumping schemes. In these systems, fiber or diode lasers pump the ~1.5 micron ⁴I₁₅⁵₂ − > ⁴I₁₃⁵₂ absorption band, where non-radiative coupling between stark levels allows 1.6 micron laser emission with quantum efficiencies in excess of 90% .