Terbium Scandium Aluminum Garnet (TSAG) Crystals
- High Verdet Constant: ~-40 rad/T·m at 1064 nm, ~20–30% higher than TGG.
- Low Optical Absorption: Excellent for maintaining beam quality in high-power laser systems.
- Superior Thermal Conductivity: ~6.5 W/m·K at room temperature, reducing thermal lensing effects.
- Broad Transparency Range: 400 nm to 1600 nm, suitable for a wide range of laser wavelengths.
- High Damage Threshold: Withstands high optical and thermal loads.
- Stable Physical and Chemical Properties: High mechanical strength and chemical resistance.
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Description
Terbium Scandium Aluminum Garnet (TSAG) is an advanced magneto-optical crystal with a high Verdet constant, low optical absorption, and excellent thermal stability. As a bulk crystal material, TSAG is specifically developed for use in Faraday rotators and optical isolators in high-power laser systems. Compared to traditional Terbium Gallium Garnet (TGG) crystals, TSAG offers higher Verdet constants and superior thermal conductivity, making it ideal for next-generation laser applications.
Key Features and Properties:
- High Verdet Constant: ~-40 rad/T·m at 1064 nm, ~20–30% higher than TGG.
- Low Optical Absorption: Excellent for maintaining beam quality in high-power laser systems.
- Superior Thermal Conductivity: ~6.5 W/m·K at room temperature, reducing thermal lensing effects.
- Broad Transparency Range: 400 nm to 1600 nm, suitable for a wide range of laser wavelengths.
- High Damage Threshold: Withstands high optical and thermal loads.
- Stable Physical and Chemical Properties: High mechanical strength and chemical resistance.
Typical Applications:
- Faraday Rotators for high-power lasers
- Optical Isolators for fiber lasers and solid-state lasers
- Optical communication systems
- Laser surgery and medical devices
- Industrial and defense laser systems
Material Properties and Crystal Structure:
- Chemical Formula: Tb₃Sc₂.₁₈Al₂.₈₂O₁₂
- Crystal Structure: Cubic garnet structure, space group Ia-3d
- Growth Method: Czochralski (Cz) pulling technique
- Lattice Constant: a = 12.33 Å
Specifications:
| Material | Terbium Scandium Aluminum Garnet (TSAG) |
| Chemical Formula | Tb₃Sc₂.₁₈Al₂.₈₂O₁₂ |
| Crystal Structure | Cubic (Garnet, space group Ia-3d) |
| Lattice Constant | a = 12.33 Å |
| Density | ~5.91 g/cm³ |
| Verdet Constant | ~-40 rad/T·m at 1064 nm |
| Transmission Range | 400 nm – 1600 nm |
| Optical Absorption | <300 ppm/cm at 1064 nm |
| Thermal Conductivity | ~6.5 W/m·K at 300 K |
| Melting Point | ~1970 °C |
| Hardness (Mohs) | ~8 |
| Typical Sizes | 3×3×10 mm³, 4×4×15 mm³, 5×5×20 mm³ (customizable) |
| Orientation | [111] or custom |
| Surface Finish | As-grown, or optically polished |
| Coating | Optional AR coatings (532 nm, 1064 nm) |
Standard Product Sizes and Availability:
- Available as bulk crystals
- Typical rods and slabs: 3×3×10 mm³, 4×4×15 mm³, 5×5×20 mm³ (custom sizes available)
- Orientation: Standard [111] orientation, custom upon request
- Surface: As-grown or optically polished surfaces
- Coatings: AR coatings (optional) for 532 nm, 800 nm, 1064 nm, etc.
Customization Options:
- Custom dimensions and orientations
- Polished or unpolished surfaces
- Anti-reflection (AR) coatings at specific laser wavelengths
- Special high-optical-grade selection for low-loss applications
Packaging and Delivery:
- Cleanroom-grade vacuum sealed packaging
- Protective cushioning for safe transportation
Why Choose Our Terbium Scandium Aluminum Garnet (TSAG) Crystals?
- In-house grown TSAG crystals with strict quality control
- Superior optical homogeneity and low absorption loss
- Competitive pricing with flexible order volumes
- Full technical support for laser system design and application
Ordering & Contact Information:
Tinsan Materials offers flexible MOQ (Minimum Order Quantity) and competitive pricing. For custom orders or technical inquiries, please contact us for a detailed consultation!
