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Terbium gallium garnet (TGG) crystal

Terbium gallium garnet (TGG) crystal

 

Molecular Formula

Tb3Ga5O12

Lattice constants:

Cube,a=12.355Å

Growth method

Czochralski

Density:

7.13g/cm3

Mohs hardness:

8.0

Melting point:

1725℃

Refractive index

1.954 @1064nm

Thermal conductivity:

9.4*10-6  /K

Vedder constant

0.12min/Oe.cm at 1064nm

Crystal Standard Specifications:

 

 

Directional accuracy:

〔111〕± 5 °

Wavefront distortion:

<λ/8 wave total @633nm

Extinction ratio:

A:>30dB,B:>28dB

Dimensional tolerances:

Diameter:

±0.1mm

Length

±0.05mm

Chamfer:

0.2mm at 45°

Other parameters:

Flatness:

<λ/10 wave at 633nm

Through Glossy Parallelism:

<1

Verticality:

<5

Surface finish:

10/5 per MIL-O13830A

Terbium gallium garnet, TGG crystal has a large magneto-optical constant, low optical loss, high thermal conductivity and high laser damage threshold, widely used in YAG, Ti-doped sapphire and other multi-level zoom, ring, seed injection into lasers. TGG is the best material for the production of magneto-optical Faraday optical rotators and isolators, Available Wavelength 400-1100nm (not including 470nm-500nm).

 
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