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Help CenterYb:LuAG Scintillation Single Crystal
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Introduction
Ytterbium-doped Lutetium Aluminum Garnet crystal, abbreviated as Yb:LuAG crystal (chemical formula: Yb:Lu₃Al₅O₁₂),
is a high-performance gain medium material suitable for ultrafast lasers.Yb:LuAG features broad absorption and
emission cross-sections as well as extremely high thermal conductivity. The ionic radii of Lu³⁺ and Yb³⁺ are highly
similar, enabling high-concentration doping with negligible degradation in thermal conductivity, making it
exceptionally suitable for high-power lasers.
In recent years, driven by the application demands for ultrashort, ultrafast, high-repetition-rate and high-energy
lasers, researchers have developed diversified crystal configurations beyond conventional rod-shaped structures,
including plate, strip and disk geometries. The market demand for larger-size Yb:LuAG laser crystal materials
continues to grow, especially as the core gain medium for high-power solid-state lasers.
Nanjing Colourful Optoelectronic Technology Co., Ltd. supplies plate and bulk Yb:YAG crystals with different
doping concentrations, featuring no central core or side core defects. The maximum available diameter reaches
φ50 mm. We also provide customized crystal growth and precision processing of Yb:LuAG products in various
specifications according to customer requirements.
Performance Comparison: 10%Yb:YAG vs Yb:LuAG Crystal
| Crystal Parameter | Yb:YAG | Yb:LuAG |
|---|---|---|
| Absorption Cross-section (10⁻²⁰cm²) | 0.77 @940 nm | 0.75 @940 nm |
| Emission Cross-section (10⁻²⁰cm²) | 2.1 @1030 nm | 2.373 @1030 nm |
| Emission Spectral Bandwidth (nm) | 10 | 10 |
| Fluorescence Lifetime (ms) | 0.967 | 0.988 |
| Thermal Conductivity (W/m/K) | 6.1 | 8 |
| Refractive Index @1030 nm | 1.82 | 1.84 |
Physical and Chemical Properties
| Parameter | Specification |
|---|---|
| Chemical Formula | Yb:Lu₃Al₅O₁₂ |
| Doping Concentration (at%) | 0.1–50% |
| Growth Direction | [100] or [111] |
| Crystal Structure | Cubic System |
| Lattice Parameter | 1.193 nm |
| Density | 6.73 g/cm³ |
| Melting Point | 1970°C |
| Refractive Index @0.940 μm | n=1.84 |
| Mohs Hardness | 8.0–8.5 |
| Thermal Conductivity (@300K) | 8 W/m·K |
| Thermal Expansion Coefficient | 8.8 – 9.0 ×10⁻⁶ /K |
Absorption and Emission Spectrum of 10% Yb:LuAG Crystal
Laser Grade Processing Specifications
| Parameter | Technical Index |
|---|---|
| Dimension Specification | (3×3)~(50×50)×0.5 mm³ or customized size |
| Orientation Accuracy | ±0.5° |
| Parallelism | 30 arcsec |
| Perpendicularity | 15 arcmin |
| Surface Finish | 10-5 |
| Flatness | λ/8 |
| Wavefront Distortion | λ/4 |
| Effective Aperture | 90% |
| Edge Chipping | ＜ 0.1 mm |
| Chamfer | ＜ 0.1mm×45° |
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