Nd:GGG

Nd:GGG
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CRYLINK’s Nd: GGG crystal products, also known as Nd: Gd3Ga5O12 crystal. It is a kind of laser crystal product with excellent comprehensive performance. It is widely used in LD pump and laser working material field. The product has the characteristics of a large stimulated emission cross-section, high thermal conductivity, and long emission time. It can be used in a flash, solid state heat capacity laser, high power LD pumped Nd: GGG laser products.

Features of Nd: GGG Crystal:

  • Long launch time
  • High laser efficiency
  • Low damage threshold
  • High thermal conductivity
  • High specific heat capacity
  • Large stimulated emission cross-section

Standard

Doping Concentration0.5~3at.%
Orientation[111] within± 5º
Wavefront Distortion≤ 0.5λ/inch@632.8 nm (for the rod)
Extinction Ratio≥ 20dB @632.8 nm (for the rod)
SizeDiameter: 2~70mm, Length: 3~100mm
Dimensional ToleranceDiameter:+0.00″/-0.002″, Length: ± 0.02″
Barrel finishGround Finish with 400# Grit or polished
Parallelism≤ 10 arcsec (for the rod)
Flatness≤λ/4@632.8nm (for the rod)
AR Coating Reflectivity≤0.25% @1060nm

Physical and Chemical Properties

Crystal StructureCube
Lattice Constant12.383 Å
Mohs Hardness8
dn/dT17×10-6/K
Poisson Ratio0.28
Melting Point1725°C
Density7.1 g/cm3
Thermal Expansion8×10-6C-1

Optical and Spectral Properties

Laser Conversion4F3/2→4I11/2
Laser wavelength1060nm
Fluorescence Lifetime240μs
Refractive Index1.94@1060nm
Diode Pump Belt808nm, 881nm

Spectrum

Nd：GGG laser crystal absorption crylink
Nd：GGG Absorption Spectrum

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