Er YAG Laser Crystals
DescriptionErbium doped Yttrium Aluminum Garnet (Er:Y3Al5O12 or Er:YAG) combines various output wavelength with the superior thermal and optical properties of YAG. It is a well known material for medical applications.Highly doped Erbium YAGis a well-known laser source for producing 2940nm emission,Website:, commonly used in medical (e.g. cosmetic skin resurfacing), and dental (e.g. oral surgery) applications due to the strong water and hydroxapatite absorption at this wavelength.Low doped Erbium YAGhase 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 micron4I15/2− >4I13/24I15/2 4I13/2 absorption band, where non-raditive coupling between stark levels allows 1.6 micron laser emission with quantum efficiencies in excess of 90%SpecificationParameters of materialsMaterialsEr3+:Y3Al5O12Concentrations0.5%,5%,50 %Orientation<111>or <100>Extinction Ratio≥ 30dBCoating Polishing Specification for Laser GradeOrientation Tolerence< 0.5°Thickness/Diameter Tolerance±0.05mmSurface Flatness<λ/8@632nmWavefront Distortion<λ/4@632nmSurface Quality10/5Parallel30〞Perpendicular15ˊClear Aperture>90%Chammfer<0.2×45°
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