Barium Fluoride (BaF2)
Barium Fluoride (BaF2) optical material for UV-to-IR windows and spectroscopy optics, with property review for custom windows, lenses, and IR assemblies.
Key Properties
About Barium Fluoride (BaF2)
Overview
Barium Fluoride (BaF2) is an optical material used for UV-to-IR windows and spectroscopy optics. Material selection should be based on wavelength range, mechanical limits, coating compatibility, and the final geometry of the optic.
Key Material Properties
| Parameter | Guidance |
|---|---|
| Transmission Range | 0.15-14 μm |
| Refractive Index | 1.462 at 2.58 μm; 1.45 at 5 μm |
| Density | 4.89 g/cm3 |
| Knoop Hardness | 82 kg/mm2 |
| Young's Modulus | 53.07 GPa |
| Thermal Expansion | 18.1*10^-6/K @273 K |
Typical Applications
- Broadband spectroscopy
- UV-to-IR windows
- Infrared optical systems
- Analytical optics
- Custom crystal optics
Selection Guidance
BaF2 requires careful handling and application review because material behavior and environmental exposure matter. Treat the values on this page as engineering selection guidance, then confirm final tolerances, coating, and inspection requirements against the production drawing.
Request Material Review
Use the contact form or email [email protected] with wavelength, size, quantity, coating target, and application notes for a practical material review.