Terbium Gallium Garnet (Tb3Ga5O12, TGG) is an excellent magneto-optical crystal used in various Faraday devices (Rotators and Isolators) in the range of 400 nm-1100 nm, excluding 475 nm-500 nm.
Main Features:
●Large Verdet Constant (35 Rad T-1m-1);
●Low optical losses (<0.1%/cm);
●High thermal conductivity (7.4W m-1K-1);
●High laser damage threshold (>1GW/cm2).
Basic Properties：
Chemical Formula | Tb3Ga5O12 |
Lattice Parameter | a=12.355Å |
Density | 7.13 g/cm3 |
Mohs Hardness | 8 Mohs |
Melting Point | 1725 ℃ |
Refractive Index | 1.954 @ 1064 nm |
Thermal Conductivity | 9.4 x 10-6C-1 |
Verdet Constant | 0.12 min/Oe.cm @ 1064 nm |
Specifications:
Orientation | [111] within ±15 arc min |
Wave Front Distortion | < λ/8 wave |
Extinction Ratio | > 30dB |
Diameter | +0.00mm/-0.05mm |
Length | +0.2mm/-0.2mm |
Chamfer | 0.10mm @ 45° |
Flatness | < λ/10 wave @ 633nm |
Parallelism | < 30 arc Seconds |
Perpendicularity | < 5 arc min |
Surface Quality | 10/5 Scratch/Dig |
