Strontium Fluoride Windows (SrF2) is one of the most important alkaline-earth fluorides. Stanford Optics has rich experience in manufacturing and supplying high-quality Optical Products.
Strontium Fluoride Windows (SrF2) are key alkaline-earth fluorides with a range of notable physical characteristics, including low energy phonons, high ionization, high resistance, and good anion conductivity. These properties make it valuable in applications such as light-emitting devices, optical imaging, biomarkers, and anion conductors. Compared to oxides and calcium fluoride, strontium fluoride stands out with lower phonon energy, higher thermal conductivity, and a negative thermal optical coefficient. This unique thermal property helps counteract the thermal lens effect during laser oscillation. Strontium fluoride has significantly advanced the development of optical materials and the enhancement of optical instruments due to its distinct material structure and features.
Strontium Fluoride is widely used in various applications, including light-emitting devices, optical imaging, biomarkers, and anion conductors.
To ensure the product remains in top condition, our Strontium Fluoride Windows (SrF2) are carefully handled during storage and transportation.
Transmission Range |
0.15 to 11 μm |
Refractive Index |
1.439 at 0.55 μm |
Reflection Loss |
6.3% at 0.55 μm |
Absorption Coefficient |
<1 x 10-3 cm-1 at 5 μm |
Reststrahlen Peak |
46 μm |
dn/dT |
-12 x 10-6 /℃ |
Density |
4.24 g/cc |
Melting Point |
1450℃ |
Thermal Conductivity |
8.3 W m-1 K-1 at 293K |
Thermal Expansion |
18.4 x 10-6 /℃ at 293K |
Hardness |
Knoop 154 (100) & 140 (110) |
Specific Heat Capacity |
543 J Kg-1 K-1 |
Dielectric Constant |
7.69 at 2 MHz |
Youngs Modulus (E) |
89.91 GPa |
Shear Modulus (G) |
34.6 GPa |
Bulk Modulus (K) |
24.65 GPa |
Elastic Coefficients |
C11=124; C12=45; C44=31.7 |
Apparent Elastic Limit |
36.5 MPa (5300 psi) |
Poisson Ratio |
0.25 |
Solubility |
0.012g/100g water at 27℃ |
Molecular Weight |
125.62 |
Class/Structure |
Cubic Fm3m (#225) Cleaves on (111) |
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