Barium Fluoride (BaF2) is commonly used for optical components in expanded spectrum band from ultraviolet to infrared regions, since it is transparent over an extremely wide range of wavelengths (from 0.15-0.20 µm to 11-11.5 µm). Barium Fluoride (BaF2) transmittance at 200 nm is relatively low (0.60), but at 500 nm Barium Fluoride (BaF2) goes up to 0.96-0.97 and stays at that level until 9 µm, then it starts falling off (0.85 for 10 µm and 0.42 for 12 µm).
Barium Fluoride (BaF2) is hard, but is very sensitive to thermal shock. In dry environment Barium Fluoride (BaF2) can be used up to 800 °C, but its resistance to water is less than that of Calcium Fluoride. That's why Barium Fluoride (BaF2) gets corroded by water, when it is heated to 500 °C. Barium Fluoride (BaF2) is the most resistant of all optical fluorides to high-energy radiation.
Barium Fluoride (BaF2) is used for optical windows, lenses, prisms and other optical items in the range from the ultraviolet to the infrared. For an equivalent thickness the transmission extends approximately 1 micron further into the IR than Calcium Fluoride. In addition, Barium Fluoride (BaF2) has application as the fastest known scintillator material and is used for production of fast-acting and radiation resistant scintillation detectors for positron-emission tomography, nuclear calorimetry, gamma-spectroscopy, identification of charged particles and neutrons and Cherenkov counters.
We use for our Barium Fluoride (BaF2) optics high quality crystals grown by Czochralsky and Bridgman Methods and supply high transparent and low-loss BaF2 optical windows, prisms, lenses, achromatic lenses and other optical components. Barium Fluoride (BaF2) is sold in two qualities (monodomain and polydomain) and in three grades - IR-, UV- and scintillator-grade.
Impex supply following Barium Fluoride (BaF2) optics:
You can find following Barium Fluoride (BaF2) optics in our stock: