Yttrium aluminium garnet (YAG)

Yttrium aluminium garnet is an isotropic crystal with cubic symmetry. It has excellent optical and thermodynamic properties. Its mechanical properties and chemical stability are similar to those of sapphire crystals, without the birefringence effect of sapphire. Pure YAG crystals have high transmittance in the range of 0.25-5um, ranging from 2-3 μ There is no absorption in the range of m, but the glass has a strong H2O Absorption band. Therefore, undoped pure YAG crystals are a new type of substrate and window material for ultraviolet and infrared optical devices. Meanwhile, the excellent physical, chemical, and optical properties of YAG crystals make them important optical applications in high-temperature and high-energy physical environments

Dihedral Technology(DHD) Co., Ltd. manufacture and processing/provide multiple specifications and high quality YAG crystal,targets,materials.

Applications

Undoped pure YAG crystal is a new type of substrate and window material for ultraviolet and infrared optical devices.
YAG crystals have important optical applications in high temperature particle physics.

Features

It has excellent optical and thermodynamic properties. Its mechanical properties and chemical stability are similar to those of sapphire crystals, without the birefringence effect of sapphire. Pure YAG crystals have high transmittance in the range of 0.25-5um, ranging from 2-3 μ There is no absorption within m, but the glass has a strong H2O Absorption band.

  • Crystal Structure

    Cubic

    Lattice Constant

    12.01Å

    Melting Point

    1970℃

    Mhos Hardness

    8.5 (mohs)

    Density

    4.55 (g/cm3)

    Specific Heat

    0.59 (J/g•cm-3) at 0-20℃

    Elastic Modulus

    310GPa

    Youngs Modulus

    3.17x104kg/mm2

    Poisson Ratio

    0.3

    Tensile Strength

    0.13-0.26GPa

    Thermal Expansion

    [111]: 7.8x10-6/K@0-250℃

    [110]: 7.7x10-6/K@0-250℃

    [100]: 8.2x10-6/K@0-250℃

    Thermal Conductivity

    14W/mK@20℃

    10.5W/mK@100℃

    Thermo-Optic Coefficient

    dn/dt = 7.3x10-6/℃

    Thermal-Shock Resistance

    800W/m

    Solubility

    Insoluble in water and slightly soluble in acid