TGG (Terbium Gallium Garnet) Crystals and Substrates
High Faraday Rotation: TGG exhibits an exceptionally high Faraday rotation, making it an ideal material for optical isolators, circulators, and other magneto-optical devices. This high rotation enables efficient polarization control and isolation of optical signals.
Low Optical Absorption: With low optical absorption across a wide spectral range, TGG substrates provide excellent optical transparency, ensuring minimal loss of light during transmission. This feature is crucial for maintaining signal integrity in optical communication systems and other optical applications.
Good Thermal Stability: TGG demonstrates good thermal stability, allowing it to withstand temperature fluctuations without significant degradation of its optical or magneto-optical properties. This characteristic ensures reliable performance even under demanding operating conditions.
High Laser Damage Threshold: TGG crystals possess a high laser damage threshold, enabling them to withstand intense laser irradiation without damage. This feature makes them suitable for use in high-power laser systems and other applications where exposure to high-intensity laser light is expected.
High Chemical Stability: TGG exhibits high chemical stability, resisting corrosion and other forms of degradation when exposed to various environments. This property ensures long-term durability and reliability in a wide range of applications.
Applications: Optical Isolators and Circulators, High-Power Laser Systems, Magneto-Optical Recording, Integrated Optics, Research and Development, etc.
Kingwin Optics proudly presents its premium TGG (Terbium Gallium Garnet) crystals and substrates, renowned for their exceptional optical and magneto-optical properties. TGG is a versatile material widely used in advanced applications due to its unique combination of high Faraday rotation, low optical absorption, and good thermal stability. Our TGG products are carefully crafted to meet the highest standards of quality and performance.
Specifications:
| Chemical formula: | Tb3Ga5O12 |
| Lattice Constant: | cubic, a = 12.355Å |
| Growing Method: | Tirafa |
| Density: | 7.13g/cm3 |
| Mohs hardness: | 8.0 |
| Melting point: | 1725℃ |
| Refractive index: | 1.954 @1064nm |
| Thermal conductivity: | 9.4*10-6 /K |
| Widel’s constant: | 0.12min/Oe.cm at 1064nm |
| Crystal Standard Specifications: | |
| Processing index: | |
| Orientation accuracy: | 〔111〕± 5 ° |
| Wavefront Distortion: | <λ/8 wave total @633nm |
| Extinction ratio: | A: >30dB, B: >28dB |
| Dimensional Tolerances: | |
| Diameter: | ±0.1mm |
| Length: | ±0.05mm |
| Chamfer: | 0.2mm at 45° |
| Other parameters: | |
| Flatness: | <λ/10 wave at 633nm |
| Parallel to the clear surface: | <1 arc minutes |
Advantages:
- High Faraday Rotation: TGG exhibits an exceptionally high Faraday rotation, making it an ideal material for optical isolators, circulators, and other magneto-optical devices. This high rotation enables efficient polarization control and isolation of optical signals.
- Low Optical Absorption: With low optical absorption across a wide spectral range, TGG substrates provide excellent optical transparency, ensuring minimal loss of light during transmission. This feature is crucial for maintaining signal integrity in optical communication systems and other optical applications.
- Good Thermal Stability: TGG demonstrates good thermal stability, allowing it to withstand temperature fluctuations without significant degradation of its optical or magneto-optical properties. This characteristic ensures reliable performance even under demanding operating conditions.
- High Laser Damage Threshold: TGG crystals possess a high laser damage threshold, enabling them to withstand intense laser irradiation without damage. This feature makes them suitable for use in high-power laser systems and other applications where exposure to high-intensity laser light is expected.
- High Chemical Stability: TGG exhibits high chemical stability, resisting corrosion and other forms of degradation when exposed to various environments. This property ensures long-term durability and reliability in a wide range of applications.
Applications:
- Optical Isolators and Circulators: The high Faraday rotation and low optical absorption of TGG make it the material of choice for optical isolators and circulators. These devices are essential components in optical communication systems, protecting sensitive optical components from unwanted back-reflections and ensuring unidirectional light propagation.
- High-Power Laser Systems: The high laser damage threshold and good thermal stability of TGG crystals enable their use in high-power laser systems. These systems require materials that can withstand intense laser irradiation and maintain stable performance under high-power operation.
- Magneto-Optical Recording: TGG’s magneto-optical properties also make it suitable for use in magneto-optical recording media. In these applications, TGG can serve as a substrate for the deposition of magnetic layers, enabling the storage and retrieval of data through the interaction of light and magnetic fields.
- Integrated Optics: The optical transparency and compatibility with various optical components make TGG substrates ideal for use in integrated optical circuits. These circuits require precise optical control and efficient signal transmission, which TGG can provide through its exceptional optical and magneto-optical properties.
- Research and Development: Due to its unique combination of properties, TGG crystals and substrates are also valuable for research and development projects exploring new materials, devices, and applications in the fields of optics, magnetics, and photonics.
Kingwin Optics’ TGG crystals and substrates represent the pinnacle of materials technology for advanced optical and magneto-optical applications. With their exceptional Faraday rotation, low optical absorption, good thermal stability, high laser damage threshold, and high chemical stability, our TGG products are poised to make a significant impact in a wide range of industries, including optical communication, laser technology, and integrated optics.
