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  • TSAG Crystal

  • TSAG is a key isolator material for next generation fiber laser. As an ideal magneto-optic crystal in visible and infrared regions,TSAG has the advantages of high Verdet constant,excellent thermal and mechanical properties.
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Main Features of TSAG:

        Large Verdet constant(48radT-1m-1 at 1064nm),about 20% higher than that of TGG;

        Low absorption(<3000ppm/cm at 1064nm),about 30% less than that of TGG;

        High power compliant;

        Low thermally-induced birefringence;

        Making the isolator small.

 

Main Applications:

        Faraday Rotator;

        Optical Isolator.

 

Table1. Properties

Transmittance Range(bulk/uncoated)

400-1600nm

Crystal Structure

Cubic,Space group Ia3d

Chemical Formula

Tb3Sc2Al3O12            

Lattice Parameter        

a=12.3Å

Growth Method

Czochralski

Density

5.91g/cm3

Melting Point

1970℃±10℃

 

CASTECH offers:

Orientation

±15′

Wavefront Distortion

<λ/8

Extinction Ratio

>30dB

Diameter Tolerance                   

+0.00mm/-0.05mm                        

Length Tolerance

+0.2mm/-0.2mm

Chamfer

0.1mm @ 45°

Flatness

<λ/10 at 633nm

Parallelism

<3′

Perpendicularity

<5′

Surface Quality

10/5

AR coating

<0.3% @ 1064nm

 

 

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  • Magneto-Optical Crystals_Terbium Scandium Aluminum Garnet(TSAG) Crystal.pdf