Key Features of Magneto-Optical Crystals
- High Verdet Constants: Superior magneto-optical efficiency, ensuring effective Faraday rotation in devices.
- Low Optical Loss: Minimal absorption, enabling high transmission efficiency for diverse wavelengths.
- Excellent Thermal Stability: High thermal conductivity and damage thresholds, ideal for high-power laser applications.
- Customizable Fabrication: Precision manufacturing to meet unique client specifications, including AR coatings.
- Broad Wavelength Compatibility: Applications span a wide spectral range, enhancing versatility for industrial and scientific uses.
Material General Description
Magneto-optical crystals such as Terbium Gallium Garnet (TGG) and Terbium Scandium Aluminum Garnet (TSAG) represent cutting-edge materials in photonics. TGG crystals provide exceptional thermal management, optical clarity, and a Verdet constant of 35 Rad·T⁻¹·m⁻¹, making them indispensable for high-power laser systems. TSAG surpasses TGG in efficiency with a Verdet constant of 48 Rad·T⁻¹·m⁻¹ and lower optical loss, ensuring optimized performance in compact, high-power applications. These materials are ideal for Faraday isolators, rotators, and laser gyroscopes.
General Applications
- Faraday Isolators: Ensure one-way light propagation to protect sensitive laser systems.
- High-Power Laser Systems: Widely used in industrial cutting and research lasers for unidirectional light control.
- Scientific Instruments: Play a pivotal role in spectrometry and polarization-dependent applications.
- Telecommunication Devices: Essential for infrared-based long-range communication systems.
Comparison of Crystals
| Property | TGG Crystal | TSAG Crystal |
| Verdet Constant | 35 Rad·T⁻¹·m⁻¹ | 48 Rad·T⁻¹·m⁻¹ |
| Thermal Conductivity | 7.4 W·m⁻¹·K⁻¹ | 7.4 W·m⁻¹·K⁻¹ |
| Wavelength Range | 400–1100 nm | 400–1600 nm |
| Damage Threshold | >1 GW/cm² | >1 GW/cm² |
| Absorption Loss | <0.1%/cm | <0.003 cm⁻¹ |
| Applications | Faraday isolators, ring lasers | Fiber lasers, compact isolators |
Standard Fabrication Specifications
| Parameter | Value |
| Orientation | [111] ±15′ |
| Diameter Tolerance | ±0.1 mm |
| Surface Quality | 10/5 (MIL-PRF-13830B) |
| Flatness | ≤λ/8 @ 633 nm |
| Parallelism | ≤20 arc sec |
| Coating Options | AR coatings for 1064 nm |
POC Strength and Capabilities
Photonics On Crystals (POC) excels in the manufacturing of high-precision magneto-optical crystals, providing tailored solutions for advanced photonics systems. With state-of-the-art facilities, POC ensures quality control for custom dimensions, coatings, and high-performance solutions in industrial, medical, and research fields.
Standard Products
| Dimensions (mm) | Coating | Price (USD) |
| 3 × 3 × 5 | AR@1064 nm | 350 |
| 5 × 5 × 10 | AR@1064 nm | 600 |
| Custom Sizes | Upon request | Contact us |
For more details or to request customization, visit Photonics On Crystals.