Stock Code: 601869.SH / 06869.HK

TGG Crystal

TGG crystal of YOSC, which is made by the advanced and proven Czochralski (CZ) process, has excellent features like large magneto-optical figure of merit, low light absorption, good thermal conductivity and high laser damage threshold. It is the best magneto-optical material for producing Faraday rotators and isolators. It is suitable for wavelengths of 400nm-1100nm (excluding 470nm - 500nm).
Applications
  • Isolator
  • Faraday rotator
Characteristics
  • High Verdet constant
  • Large extinction ratio
  • High laser damage threshold
  • Good thermal conductivity
     
Structure

Specifications

Basic properties

Chemical formula

Tb3Ga5O12

Crystal structure

Cubic Garnet

Lattice constant (Å)

12.355

Crystal orientation

<111>

Density (g/cm3 )

7.13

Mohs' hardness

8

Magneto-optic properties

Refractive index(nm)

1.95@1064

Verdet constant (Rad/m.T)(nm)

35@1064

Extinction ratio (dB)

>35

Laser damage threshold (W/cm2)

>1G

Coating (%@1064±30nm)

AR:R<0.2

Transmission loss (%/cm)

<0.1

Machining quality

Orientation accuracy (′)

±15

Diameter tolerance (mm)

+0.00/-0.05

Length tolerance (mm)

±0.1

Flatness(nm)

<λ/8@633

Parallelism (″)

<30

Verticality (′)

<10

Scratch-dig

10/5

Chipping (mm)

<0.1

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