Strontium Fluoride Windows (SrF2) Description
Strontium Fluoride Windows (SrF2) is one of the most important alkaline-earth fluorides. It has many physical properties, such as low energy phonon, high ionization, high resistance coefficient, and good anion conductivity. It has been widely used in light-emitting devices, optical imaging, biomarkers, anion conductors, and other fields. Compared with oxide and calcium fluoride, strontium fluoride has lower phonon energy, higher thermal conductivity, and negative thermal optical coefficient, especially negative thermal optical coefficient, which can compensate for the thermal lens effect in the process of laser oscillation. Strontium Fluoride has promoted the research of optical materials and the improvement of optical instruments with its unique material structure and properties
Strontium Fluoride Windows (SrF2) Specifications
Transmission Range
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0.15 to 11 μm
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Refractive Index
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1.439 at 0.55 μm
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Reflection Loss
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6.3% at 0.55 μm
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Absorption Coefficient
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<1 x 10-3 cm-1 at 5 μm
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Reststrahlen Peak
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46 μm
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dn/dT
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-12 x 10-6 /℃
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Density
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4.24 g/cc
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Melting Point
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1450℃
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Thermal Conductivity
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8.3 W m-1 K-1 at 293K
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Thermal Expansion
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18.4 x 10-6 /℃ at 293K
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Hardness
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Knoop 154 (100) & 140 (110)
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Specific Heat Capacity
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543 J Kg-1 K-1
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Dielectric Constant
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7.69 at 2 MHz
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Youngs Modulus (E)
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89.91 GPa
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Shear Modulus (G)
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34.6 GPa
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Bulk Modulus (K)
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24.65 GPa
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Elastic Coefficients
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C11=124; C12=45; C44=31.7
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Apparent Elastic Limit
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36.5 MPa (5300 psi)
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Poisson Ratio
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0.25
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Solubility
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0.012g/100g water at 27℃
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Molecular Weight
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125.62
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Class/Structure
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Cubic Fm3m (#225) Cleaves on (111)
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Strontium Fluoride Windows (SrF2) Applications
It has been widely used in light-emitting devices, optical imaging, biomarkers, anion conductors, and other fields.
Strontium Fluoride Windows (SrF2) Packaging
Our Strontium Fluoride Windows (SrF2) is carefully handled during storage and transportation to preserve the quality of our product in its original condition.