TGG
Terbium Gallium Garnet (Tb3Ga5O12, TGG) is a high performance magneto-optical crystal in the visible and infrared spectral range. TGG crystal possesses a high Verdet constant, low absorption coefficient, high thermal conductivity, high laser damage threshold and excellent optical quality. All these merits make TGG crystal suitable for constructing the Faraday effect devices and make up for the deficiency of YIG crystal in the visible and near infrared spectral regions. TGG crystal has aroused widespread concern as an ideal magneto-optical material for the optical isolators of fiber laser devices in the visible and infrared regions.
使用/应用
TGG crystal is suitable for constructing the Faraday effect devices and make up for the deficiency of YIG crystal in the visible and near infrared spectral regions.
TGG crystal has aroused widespread concern as an ideal magneto-optical material for the optical isolators of fiber laser devices in the visible and infrared regions.
特点/优势
TGG crystal possesses a high Verdet constant, low absorption coefficient, high thermal conductivity, high laser damage threshold and excellent optical quality.
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Molecular Formula
Tb3Ga5O12
Lattice Constant
a=12.355 Å
Growth Method
Czochralski
Melting point
1725℃
Density
7.13 (g/cm3)
Mohs Hardness
8（mohs）
Refractive Index
1.954 @1064nm
Verdet Constant
0.12min/Oe.cm at1064nm
Orientation
<111>within 0.5 degrees
Wavefront Distortion
<1/8 wave total at 633nm
Extinction Ratio
>30dB
Dimension
Diameter
+0.00mm/-0.05mm
Length
±0.2mm
Chamfer
0.13mm（+0.00mm，-0.08mm） at 45°±5°
Processing parameters
Flatness
<1/10 wave at 633nm
Parallelism
<1 minutes of arc
Verticality
<1 degree
S/D
20/10
Package
Class 100 clean bag, Class 1000 super clean room
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Dimension
Diameter+0.00mm/-0.05mm
Lengt
±0.2mm