Stock Code:601869.SH / 06869.HK

Terbium Gallium Garnet Crystal (TGG)

YOFC TGG crystal is manufactured by advanced crystal pulling (CZ) technology, with series of superior characteristics such as high magneto-optical merit value, low light absorption, good thermal conductivity, and high laser damage threshold. It is the best magneto-optical material used for Faraday rotators and isolators. The suitable wavelength is 400nm - 1100 nm ( not including 470nm - 500 nm ). The size of TGG product can be customized according to customer's special needs.
Applications
  • Isolator
  • Faraday rotator
Characteristics
  • High Verdet constant
  • High laser damage threshold
  • High extinction ratio

Specifications

Product Type TGG Φ5×15, TGG 3.5×8×5
Basic Performance Optical Performance

Chemical Formula

Tb3Ga5O12

Refractive Index

1.954@1064 nm

Structure

Cubic Garnet

Laser Damage Threshold (W/cm2  )

>1G

Lattice Constant (Å)

a = 12.355

Verdet Constant ( Rad/T·m )

35@1064 nm

Orientation

< 111 >

Extinction Ratio(dB)

≥ 35

Density (g /cm3)

7.13

Optical Losses(%/cm)

<0.1

Moh's Hardness

8.0

Antireflection Coating(%@1064 ± 30 nm)

AR:R<0.2

Processing Quality

Directional ( ′ )

±15

Diameter (mm)

+ 0.00/- 0.05

Length (mm)

± 0.1

Cleanliness

10/5

Flatness

< λ / 8@633 nm

Parallelism ( ″ )

<30

Verticality ( ′ )

<10

Chipping (mm)

<0.1

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