Yb:YAG Crystal (Ytterbium-doped Yttrium Aluminum Garnet)
- Emission wavelength near 1030 nm
- Broad absorption bands near 940 nm and 970 nm (diode-pumpable)
- High slope efficiency and low quantum defect
- Lower thermal loading than Nd-doped crystals
- Excellent thermal conductivity and mechanical strength
- Long upper-state lifetime (~1 ms)
- Suitable for CW, pulsed, and mode-locked operation
- High damage threshold and optical homogeneity
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Description
Yb:YAG (Ytterbium-doped Yttrium Aluminum Garnet, Yb³⁺:Y₃Al₅O₁₂) is one of the most promising and efficient laser crystals for diode-pumped solid-state lasers (DPSSLs). It emits at ~1030 nm and is characterized by low quantum defect, high thermal conductivity, and broad absorption bandwidth, making it highly suitable for high-power laser systems.
Compared to Nd:YAG, Yb:YAG exhibits lower heat generation and higher efficiency due to its simpler energy level structure. These advantages make it ideal for industrial, medical, and military applications requiring high average power, high peak power, and excellent beam quality.
Key Features
- Emission wavelength near 1030 nm
- Broad absorption bands near 940 nm and 970 nm (diode-pumpable)
- High slope efficiency and low quantum defect
- Lower thermal loading than Nd-doped crystals
- Excellent thermal conductivity and mechanical strength
- Long upper-state lifetime (~1 ms)
- Suitable for CW, pulsed, and mode-locked operation
- High damage threshold and optical homogeneity
Applications
- Industrial Lasers: Cutting, welding, engraving, and micromachining
- Medical Equipment: Dermatology, dentistry, and surgery lasers
- Scientific Research: Femtosecond lasers, ultrafast spectroscopy
- Military and Aerospace: Eye-safe high-power solid-state lasers
- Laser Pumping: Source for optical parametric generation or amplification systems
Technical Specifications
| Chemical Formula | Yb:Y₃Al₅O₁₂ |
| Crystal Structure | Cubic, space group Ia3d (Garnet) |
| Emission Wavelength | ~1030 nm |
| Pump Wavelengths | ~940 – 970 nm |
| Fluorescence Lifetime | ~1 ms |
| Thermal Conductivity | ~14 W/m·K |
| Refractive Index | ~1.82 @ 1030 nm |
| Density | 4.56 g/cm³ |
| Mohs Hardness | 8.25 |
| Transparency Range | 0.25 – 5.0 μm |
| Typical Doping Level | 1 – 10 at.% Yb³⁺ |
| Orientation | <111> or <100> |
| Surface Finish | Laser-grade polished (10/5 S/D typical) |
| Typical Sizes | φ3 – 15 mm; Length: 30 – 100 mm (customizable) |
Customization Options
Tinsan Materials provides Yb:YAG crystals tailored for specific laser designs and performance goals:
- Doping Levels: Standard 1–10 at.% Yb³⁺, other levels available on request
- Crystal Dimensions: Customizable diameters and lengths for different power outputs
- Orientation: Cut along <111> or <100> axes for thermal and optical optimization
- End Configuration: Plano-plano, Brewster angle, or custom surface geometry
- AR Coatings: Custom coatings for pump (940/970 nm) and laser (1030 nm) wavelengths
- Assembly Services: Pre-mounted or heat-sinked options for laser module integration
Technical Support
Tinsan Materials provides full technical consultation including:
- Crystal selection guidance for high-power laser systems
- Pump configuration and cavity design support
- Optical coating and finish customization
- Post-sales technical services for OEM and research customers
Ordering & Contact Information
We offer flexible MOQ (Minimum Order Quantity), competitive pricing and global shipping. For custom orders or technical inquiries, please contact us for a detailed consultation!
