Orientation | [111] within ±15 arc min | Wave Front Distortion | <1/8 wave |
Extinction Ratio | >35dB | Diameter Tolerance | +0.00mm/-0.05mm |
Length Tolerance | +0.2mm/-0.2mm | Chamfer | 0.10mm@45º |
Flatness | <1/10 wave @ 633nm | Parallelism | < 30 arc Seconds |
Perpendicularity | < 5 arc min | Surface Quality | 10/5 Scratch/Dig |
AR Coating | <0.2% | Large Dimensions of Crystals | 2.0--76 mm in diameter |
Basic Properties:
Chemical Formula | Tb3Ga5O12 | Lattic Parameter | a=12.355Å |
Growth Method | Czochralski | Density | 7.13g/cm3 |
Mohs Hardness | 8.0 | Melting Point | 1725℃ |
Refractive Index | 1.954 @1064nm |
Terbium Gallium Garnet (TGG) Crystal Used for Faraday Isolators and Rotators. TGG is an excellent magneto-optical crystal used in various Faraday devices (Rotator and Isolator) in the range of 400nm-1100nm, excluding 475-500nm.