Er：YAG
Er:YAG is a 2.94μm laser crystal, and also an important working medium for 3μm lasers.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material Processing Parameters-Er Ion Concentration | ~50 at% |
| Material Processing Parameters-Crystal Orientation | <111> or <100>±5 ° |
| Material Processing Parameters-Dimension Range-Diameter | 1 mm~20 mm |
| Material Processing Parameters-Dimension Range-Length | 10 mm~1500 mm |
| Material Processing Parameters - Dimensional Tolerance - Diameter (Φ) | +0/-0.04 mm |
| Material Processing Parameters - Dimensional Tolerance - Length (L) | +0.5/-0 mm |
| Material Processing Parameters - Perpendicularity | ≤5 ′ |
| Material Processing Parameters - Parallelism | ≤10 ″ |
| Material Processing Parameters-Chamfer | 0.15±0.05 mm |
| Material Processing Parameters - Surface Finish | 10/5 |
| Material Processing Parameters-Cylindrical Machining | Fine grinding, polishing, threading |
| Material Processing Parameters-End Face Flatness [632.8nm] | ≤λ/10@632.8 nm |
| Material Processing Parameters-Wavefront Distortion [1064nm] | ≤λ/8 per inch @1064 nm |
| Material Processing Parameters-Extinction Ratio | ≥25 dB |
| Material Processing Parameters-Coating [2940nm] | Anti-reflection Coating:R<0.20 %@2940 nm |
| Material Processing Parameters-Damage Threshold | ≥500 MW/cm² |
| Material Optical Parameters-Laser Transition | ⁴ I₃/₂ →4⁴ I₁₁/₂ |
| Material Optical Parameters-Laser Wavelength | 2940 nm |
| Material Optical Parameters-Photon Energy [2940nm] | 6.75×10⁻²⁰ J@2940 nm |
| Material Optical Parameters-Emission Cross-section | 3×10⁻²⁰ cm² |
| Material Optical Parameters-Main Pump Band Range | 600~800 nm |
| Material Physicochemical Properties-Crystal Structure | Cubic crystal system |
| Material Physicochemical Properties-Melting Point | 1970 ℃ |
| Material Physicochemical Properties-Density | 4.56±0.04 g/cm³ |
| Material Physicochemical Properties-Specific Heat | 0.59 J/g.cm³ |
| Material Physicochemical Properties-Elastic Modulus | 310 GPa |
| Material Physicochemical Properties-Young's Modulus | 3.17×10⁴ Kg/mm² |
| Material Physicochemical Properties-Mohs Hardness | 8.5 |
| Material Physicochemical Properties-Poisson's Ratio | 0.3 |
| Material Physicochemical Properties-Tensile Strength | 0.13~0.26 GPa |
| Material Physicochemical Properties-Thermal Expansion Coefficient (<100>) [0~250℃] | 8.2×10⁻⁶ /K@0~250 ℃ |
| Material Physicochemical Properties-Thermal Expansion Coefficient (<110>) [0~250℃] | 7.7×10⁻⁶ /K@0~250 ℃ |
| Material Physicochemical Properties-Thermal Expansion Coefficient (<111>) [0~250℃] | 7.8×10⁻⁶ /K@0~250 ℃ |
| Material Physicochemical Properties-Thermal Conductivity [20℃] | 14 W/m/K@20 ℃ |
| Material Physicochemical Properties-Thermal Conductivity [100℃] | 10.5 W/m/K@100 ℃ |
| Material Physicochemical Properties-Thermo-optic Coefficient (dn/dT) | 7.3×10⁻⁶ /K |
| Material Physicochemical Properties-Refractive Index [2940nm] | 1.79@2940 nm |
Applications
Key Features
Datasheet
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Supplier Information
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