TGG is an excellent magneto-optical crystal used in various Faraday devices(Polarizer and Isolator) in the range of 400nm-1100nm, excluding 475-500nm.
Basic properties:
Chemical Formula Tb3Ga5O12
Lattice Parameter a=12.355Å
Growth Method Czocralski
Density 7.13g/cm3
Mohs Hardness 8.0
Melting Point 1725 ℃
Refractive Index 1.954 at 1064nm
TGG specifications HG supply:
Standard TGG Rod Specification:
Orientation [111] within ±15 arc min
Wave Front Distortion < 1/8 wave
Extinction Ratio > 30dB
Diameter +0.00mm/-0.05mm
Length +0.2mm/-0.2mm
Chamfer 0.10mm @ 45°
Flatness < 1/10 wave at 633nm
Parallelism < 30 arc Seconds
Perpendicularity < 5 arc min
Surface Quality 10/5 Scratch/Dig
AR coating