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Er:YAG


combine various output wavelength with the superior thermal and optical properties of YAG

Classification:


Er:YAG combine various output wavelength with the superior thermal and optical properties of YAG.It’s an excellent laser crystal which lasers at 2.94um highly surface cutting laser.It is a well-known material for medical applications.

 

PRODUCT FEATURE

Very high slope efficiency

Operates well at room temperature

Operate in a relatively eye-safe wavelength range

 

Absorption Spectrum

Emission Spectrum

Specifications
Concentration~50at%
Orientation<111> or <100>±5°
DimensionDiameter:2~6mm, Length:30~150mm(Customized available)
Dimension ToleranceΦ:+0/-0.04mm,L:+0.5/-0mm
Perpendicularity≤5′
Parallelism≤10″
Chamfer0.15±0.05mm
Surface Quality10/5(MIL-PRF-13830B)
BarrelFine Ground, Polishing, Grooving
Flatness≤λ/10@632.8nm
Wavefront Distortion≤λ/8 per inch @1064nm
Extinction Ratio≥25dB
Damage Threshold>500MW/cm²
CoatingR≤0.20%@2940nm

 

Optical Properties
Laser Transition4I3/24I11/2
Wavelength2940nm
Photon Energy6.75×10-20J@2940nm
Emission Cross Section3×10-20cm2
Main Pump Wavelength Range600~800nm

 

Physical and Chemical Properties
Crystal StructureTetragonal
Melting Point1970°C
Density4.56±0.04g/cm3
Specific Heat0.59J/g.cm3
Elastic Modulus310GPa
Young's Modulus3.17×104Kg/mm2
Mohs Hardness8.5
Poisson’s Ratio0.3
Tensile Strength0.13~0.26GPa
Thermal Expansion Coefficients<100>Direction:8.2×10-6/K@0~250°C
<110>Direction:7.7×10-6/K@0~250°C
<111>Direction:7.8×10-6/K@0~250°C
Thermal Conductivity14W/m/K@20°C
10.5W/m/K@100°C
Thermal Optical Coefficientdn/dT=7.3×10-6/k
Refractive Index1.79@2940nm

Keywords:

YAG

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