Yb: YAG レーザー結晶
仕様
Parameter
| Materials | Yb:YAG |
| Yb Concentration Tolerance (atm%) | 0.5, 1, 2, 3, 5, 7.5 , 10, 15, 20, 25% |
| Orientation | [001] or [110] or [111] <±0.5° |
| Parallelism | 10〞 |
| Perpendicularity | 5ˊ |
| Surface Quality | 10-5(MIL-O-13830A) |
| Wavefront Distortion | λ/4@632nm |
| Surface Flatness | λ/8@632nm |
| Clear Aperture | >95% |
| Chamfer | <0.1×45° |
| Thickness/Diameter Tolerance | ±0.05 mm |
| Maximum Dimensions | dia 50×100 mm |
| Coatings | AR/AR@940+1030；HR@940+AR1030 |
| Crystal Structure | cubic – la3d |
| Lattice Constants | 12.01 Å |
| Density | 4.56±0.04 g/cm3 |
| Melting Point | 1970 °C |
| Thermal Conductivity /(W·m-1·K-1@25°C) | λ/4@632nm |
| Specific Heat/ (J·g-1·K-1) | 0.59 |
| Thermal Optical Coefficient(dn/dT) | 7.3×10-6/℃ |
| Thermal Expansion /（10-6·K-1@25°C ） | 8.2 [100] 7.7 [110] 7.8 [111] |
| Hardness (Mohs) | 8.5 |
| Young`s Modulus /GPa | 317 |
| Shear Modulus /Gpa | 54.66 |
| Extinction Ratio | 25 dB |
| Tensile Strength/Gpa | 0.13-0.26 |
| Solubility | Water: Insoluble; Common Acides: Slightly |
| Poisson Ratio | 0.25 |
| Laser Transition | 2F5/2→2F7/2 |
| Laser Wavelength | 1030 nm |
| Photon Energy | 1.93×10-19J(@1030 nm) |
| Pump Absorption Band Width | 8 nm |
| Loss Coefficient | 0.003 cm-1 |
| Diode Pump Band | 940 nm or 970 nm |
| Emission Cross Section | 2.0×10-20 cm2 |
| Fluorescence Lifetime | 1.2 ms |
| Emission Linewidth | 9 nm |
| Refractive Index @1.030 μm | 1.82 |
| Thermal Optical Coefficient | 9× 10-6/℃ |
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