- Product Name: BaF2
- Maximum of Material Diameter:Φ180mm
- Clear Aperture:85%
- Surface Flatness:λ/4 @ 633nm
- Surface Quality:20/10
Product overview
Barium fluoride crystal shows good optical transmittance over wide spectrum range, from 150nm to 12.5μm. It is used for windows, lenses and prisms, particularly for the application of ultraviolet transmittance. The highest quality of BaF2 has an application as the well know scintillation crystal.Scitlion is able to offer
BaF2 IR Viewport Windows for Infrared Thermography at 8μm to 14μm
Various optics for IR & VUV application, using our BaF2 crystal materials
Good quality BaF2 scintillation crystal
Good quality BaF2 crystal blank materials
OEM service for good quality BaF2 crystals
Orientation：<100>、<110>、 <111>
|
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) |
.jpg)