China Terbium scandium aluminum garnet factory
Terbium scandium aluminum garnet factory
Terbium scandium aluminum garnet company


TSAG is the key isolator material of the next generation fiber laser. As an ideal visible and infrared magneto-optical crystal, TSAG has the advantages of high Verdet constant, excellent thermal and mechanical properties.

Product Description

Terbium scandium aluminum garnet (TSAG) crystal is an ideal magneto-optical material, suitable for visible and infrared wavelengths (wavelength range: 400-1600nm). TSAG crystal has the advantages of high stability, good thermal and mechanical properties, which is essential for the next generation of high-power lasers.

Compared with TGG crystal, TSAG has higher feld constant and lower absorption loss, which makes the isolator more compact and is an ideal material for high power optical isolator.

Main Advantages:

Verdet constant 20% higher than TGG (48radT-1m-1 @ 1064nm)

Low Absorption(<3000ppm/cm @ 1064nm)

High power laser Application

Low thermally-induced birefringence

Make isolator more compact and smaller

Typical applications:

Faraday rotator

optical isolator

Material Properties

Chemical FormulaTb3Sc2Al3O12
Crystal StructureCubic, Space group la3d
Lattice Constanta=12.3Å
Growth MethodCzochralski
Melting Point1970±10℃
Transmission Range400nm-1600nm
Verdet (rad/M/T)218/152/48@532nm/633nm/1064nm

Technical Parameter

Technical Parameter

Orientation(111) ±15′
Wave Front Distortion<λ/8
Extinction Ratio>30dB
Diameter Tolerance+0mm/-0.05mm
Diameter Tolerance±0.2mm
Surface Quality10-5
AR CoatingR<0.2%@1064nm
Note: Above parameters for reference only, please contact our sales Rep. for your specific requirement.


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