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Erbium doped Yttrium Scandium Gallium Garnet

Material
Er:YSGG

 

Erbium doped Yttrium Scandium Gallium Garnet crystals (Er:YSGG) are designed for diode pumped solid-state lasers radiating in the 3 µm range. These crystals show the perspectiveness of their application alongside with the widely used Er:YAG, Er:GGG and Er:YLF crystals. Flash lamp pumped solid-state lasers based on Cr,Nd and Cr,Er doped YSGG crystals (Cr,Nd:Y3Sc2Ga3O12 or Cr,Nd:YSGG respectively Cr,Er:Y3Sc2Ga3O12 or Cr,Er:YSGG) have higher efficiency than those based on Nd:YAG and Er:YAG. Active elements manufactured from YSGG crystals are optimum for medium power pulse lasers with the repetition rates up to several tens of cycles. The advantages of YSGG crystals compared with YAG crystals are lost when large size elements are used because of the worse thermal characteristics of YSGG crystals.

Properties
Optical and spectral properties
Generated wavelength in nm
2797

2823

Refractive index @ 1064 nm
1,926
Physical properties
Density in g/cm3
5,36
Crystal structure
cubic
Thermal conductivity in W/(cm · K)
0,079
Thermal expansion in 1/K
8,1 · 10-6
Mohs hardness
7
Lattice constant in Å
12,42
Typical dopant concentration in %
30-50
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