透射鏡片材料 —YAG Y3Al5O12 釔鋁石榴石

透射鏡片材料 —YAG Y3Al5O12 釔鋁石榴石

 

Transmission Range %50
Transmission Range0.2 – 6.2 μm (Thickness 1/0.4 mm)
Refractive Index1.829452 @633 nm
Reflection Loss7.9% @3μm
Density4.56 g/cm3
Melting point1950°C
Molecular Weight593.62
Thermal Conductivity13.1 W/(m·K)
Spec. Heat Capacity628 J/(kg·K)
Thermal Expansion7.5 · 10-6/K @300K)
Hardness (Mohs)1350 (Indenter Load 200g)
Young’s Modulus280 GPa
Shear Modulus113 GPa
Bulk Modulus180 GPa
Fracture Modulus250 MPa
Elastic CoefficientC11?= 333; C12?= 111; C44?= 114 GPa
Dielectric Constant7.75 @298K
Solubility in Waternone
Crystal Structuresingle crystal, synthetic
Crystal Typecubic
Lattice Constantsa = 12.008 ?
Orientation111, 100
Poisson Ratio0.24
Applicationactive laser crystals (dopants: Nd, Tm, Ho, Er, Cr), spectroscopy, vacuum windows, IR optics

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