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          Nd:GGG

 

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

 

l         Suitable for high energy output at heat-capacity operation

l         Large crystal diameter with good optical quality

 

Specifications

Dopant concentration

0.5~3at%

Orientation

[111] within▒ 5║

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

 4F3/24I11/2

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 ┼

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

 

  Nd:YAG rod      Nd:YVO4      KTA      Er:YAG      (Nd, Ce):YAG      Yb:YAG      Cr4+:YAG      KTP      LBO      BBO

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