
- Product Name: BaF2
- Maximum of Material Diameter:Φ180mm
- Clear Aperture:85%
- Surface Flatness:λ/4 @ 633nm
- Surface Quality:20/10
Product overview

Optical Properties |
|
Transmission Range |
150 nm to 14 μm |
Transmittance |
>94% at 350 nm to 10.8 μm |
Refractive Index |
1.4624 at 2.58 μm 1.3936 at 10.35 μm |
Reflection Loss |
6.8% at 2.58 μm (both surfaces) 5.3% at 10.35 μm (both surfaces) |
Radiation Length |
20.6 mm |
Residual Radiation Peak |
47 nm |
Emission Peak |
310 nm slow; 220 nm fast |
Decay Constant |
620 ns slow; 0.6 ns fast |
Light Output |
20% slow; 4% fast |
Absorption Coefficient |
3.2 x 10-4 cm-1 at 6 μm |
dn/dT |
-15.2 x 10-6 /℃ |
Physical Properties |
|
Density |
4.89 g/cm3 |
Melting Point |
1280℃ |
Thermal Conductivity |
11.72 Wm-1K-1 at 286K |
Thermal Expansion |
18.1 x 10-6 /℃ at 273K |
Knoop Hardness |
82 with 500g indenter (kg/mm2) |
Specific Heat Capacity |
410J/(kg.k) |
Dielectric Constant |
7.33 at 1MHz |
Youngs Modulus (E) |
53.07 GPa |
Shear Modulus (G) |
25.4 GPa |
Bulk Modulus (K) |
56.4 GPa |
Elastic Coefficient |
Elastic CoefficientElastic Coefficient |
Apparent Elastic Limit |
26.9 MPa (3900 psi) |
Poisson Ratio |
0.343 |
Chemical Properties |
|
Solubility |
0.0017 g/ 100g water at 23℃ |
Molecular Weight |
175.36 |
Structure |
Cubic Crystal |
Cleavage Plane |
(111) |