Nd:GGG

  • Update:Jun 13, 2017
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Nd:GGG is an optimal crystal for solid-state heat-capacity laser because of its high thermal diffusivity and large diameter resulting from its easiness of growth with flat interface between solid and melt.

Product Introduction

Nd:GGG is an optimal crystal for solid-state heat-capacity laser because of its high thermal diffusivity and large diameter resulting from its easiness of growth with flat interface between solid and melt. It is also a candidate for high average power laser with high pulse energy.

Advantages of Nd:GGG Crystals:

Specifications

Dopant concentration 0.5~3at%
Orientation [111] within± 5º
Wavefront distortion ≤ 0.5λ/inch@632.8nm(for the rod)
Extinction ratio ≥ 20dB @632.8nm(for the rod)
Sizes Diameter 2~70mm, Length 3~100mm Upon request of customer
Dimensional tolerances Diameter:+0.00"/-0.002", Length: ± 0.02" 
Barrel finish Ground Finish with 400# Grit or polished
Parallelism ≤ 10 arc seconds(for the rod)
Flatness ≤ λ/4@632.8nm(for the rod)
AR coating reflectivity ≤0.25% @1060nm

  Optical and Spectral Properties of Nd:GGG Crystals

Laser transititon  4F3/2→4I11/2
Laser wavelength 1060nm
Fluorescence lifetime 240μs
Index of refraction 1.94@1060nm
Diode pump band 808nm, 881nm

  Physical and Chemical Properties

Crystal Structure Cubic
Lattice Constant 12.383 Å
Moh Hardness 8
dn/dT  17 x10-6/K
Poisson's Ratio 0.28
Melting Point 1725°C
Density 7.1 g/cm3
Thermal Expansion  8 x 10-6°C-1
 
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