Er：YAG
Er:YAG combine various output wavelength with the superior thermal and optical properties of YAG .It is an excellent laser crystal which lasers at 2.94μm ighly surface cutting laser.It is a well known material for medical applications.
Advantages of Er:YAG Include:
l Very high slope efficiency
l Operates well at room temperature
l Operate in a relatively eye-safe wavelength range
Typical finished part specifications and tolerances are listed below:
l Rod sizes from 2mm to 50mm in diameter and from 5mm to 180mm in length
l Er dopant concentrations~50at%
l Polished and AR coated
l Damage threshold of over 500MW/cm2
Specifications:
Material | Er:YAG |
Diameter Tolerance | +0,-0.02mm |
Thickness Tolerance | +0.5,-0mm |
Parallelism | <10 arc seconds |
Perpendicularity | <5 arc minutes |
Chamfer | 0.1mm@45° |
Wavefront Distortion | <λ/8 per inch @632.8nm |
Extinction Ratio | >25dB |
Barrel Finish | Ground Finish400#Grit |
Flatness | <λ/10 @632.8nm |
Surface Quality | 10/5 |
Anti-Reflection Coating | R<0.20%@2940nm per surface |