| Quantity: | |
|---|---|
Chemical Formula | Tb3Ga5O12 |
Lattice Parameter | a=12.355Å |
Growth Method | Czochralski |
Density | 7.13g/cm3 |
Mohs Hardness | 8.0 |
Melting Point | 1725℃ |
Refractive Index | 1.954@1064nm |
You might wonder: How does a Faraday rotator work? The crystal uses the Faraday effect, where light polarization rotates when passing through a material in a magnetic field. TGG stands for terbium gallium garnet, a material known for its strong Faraday rotation and heat resistance. You use it in isolators to allow light to travel in one direction while blocking reflected light, protecting your laser source from damage.
High-power lasers generate a lot of heat, and TGG handles it well. The crystal has excellent thermal conductivity, so it dissipates heat quickly, preventing temperature-induced performance issues. You can run your laser at full power without worrying about the crystal overheating or degrading.
You need effective polarization rotation. TGG has a high Verdet constant, meaning it rotates light polarization more efficiently than many other materials. This strong rotation ensures isolators block back-reflected light with minimal power loss, keeping your system safe and efficient.
Lasers operate at different wavelengths, and our TGG crystal works with many of them, from near-infrared to visible light. You don’t need a new crystal for each laser type—one fits multiple setups, saving you time and money.
Here’s the mechanism: In a laser isolator, the TGG crystal is placed between two polarizers. As light travels forward, the crystal rotates its polarization by 45°, allowing it to pass through the second polarizer. If light reflects back, the crystal rotates its polarization again (another 45°), making it perpendicular to the first polarizer—so it can’t pass back to the laser source. This blocks harmful back-reflection, which can damage the laser diode or amplifier.
In industrial lasers used for cutting, welding, or drilling, back-reflected light is a major risk. The isolator with TGG crystal protects the laser from damage, extending its lifespan and reducing downtime.
In research or commercial amplifiers, even a small amount of back-reflection can cause instability. The TGG crystal ensures only forward-moving light is allowed, keeping your amplifier output consistent and reliable.
In fiber optic systems, isolators with TGG crystals prevent signal interference from reflected light, ensuring clear, stable data transmission over long distances.
You can’t afford to lose time or money to laser damage. Our TGG Faraday rotator crystal offers the thermal stability, high efficiency, and wide compatibility your high-power systems need. Don’t leave your laser unprotected—integrate this crystal into your isolators and enjoy peace of mind. Your laser will operate safer and longer, making your setup more productive than ever.
