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TGG

 

Description:

The magneto-optical crystal TGG crystal is an optimum material for Faraday devices (Rotator and Isolator) in the wavelength range 400 nm-1100 nm, excluding 470-500 nm. TGG crystal has a combination of excellent properties such as large Verdet constant, low light loss, high thermal conductance and high light damage threshold which makes it a unique material for Faraday devices.

 

Features:

  • Large Verdet Constant (35 Rad T-1m-1);

  • Low optical losses (<0.1%/cm);

  • High thermal conductivity (7.4W m-1K-1);

  • High laser damage threshold (>1GW/cm2).

 

Applications:

  • Faraday Rotator;

  • Optical Isolator.

 

Properties:

Chemical FormulaTb3Ga5O12
Lattice Parametera=12.355Å
Density7.13 g/cm3
Mohs Hardness8
Melting Point1725 ℃
Refractive Index1.954 @ 1064 nm
Thermal Conductivity9.4 x 10-6C-1
Verdet Constant0.12 min/Oe.cm @ 1064 nm

 

Specifications:

Orientation                                [111] within ±15 arc min
Wave Front Distortion< λ/8 wave
Extinction Ratio> 30dB
Diameter+0.00mm/-0.05mm
Length+0.2mm/-0.2mm
Chamfer0.10mm @ 45°
Flatness< λ/10 wave @ 633nm
Parallelism< 30 arc Seconds
Perpendicularity< 5 arc min
Surface Quality10/5 Scratch/Dig