BARIUM FLUORIDE (BaF2) windows
Alkor Technologies - manufacturer of BaF2 optical components. We supply BaF2 windows, BaF2 lenses, BaF2 prisms according to customer's specifications.
We have own growth facility for BaF2 and CaF2 crystal growth. We grow and sell about 50kg of BaF2 crystals every month. That is why we can offer Barium Fluoride window and BaF2 optics at very competitive price.
The largest dimensions of BaF2 optics: Dia200x40mm.
High Precision BaF2 windows: We can provide up to 150mm diameter BaF2 windows with S/D 20/10; Flatness 0.25 waves at 633 and parallelism up to 10 arc. sec.
BaF2 transmittance. Window thickness 10mm.
Barium Fluoride is used for windows, lenses and prisms, particulary when transmission into the ultraviolet is desired. The transmission range of BaF2 is from 0.2 to 11mkm. Transmission in the VUV is degraded by prolonged exposure to moist atmospher, but it is not significantly degraded by exposure to high energy radiation.
Barium Fluoride is suitable for applications in the IR band (8 to 14 µm) and is often used as a IR viewport window for thermography. We provide a large variety of BaF2 windows for vacuum viewports suitable for ISO-K, KF and СА flanges.
Barium Fluoride is less resistant to attack by water than Calcium Fluoride. Pronounced water attack occurs at 500C, but the material can be used to 800C to dry. Barium Fluoride is the most resistant fluoride to high energy radiation but does not have VUV transmission of other types. The material is relatively hard but is very sensitive to thermal schock.
To calculate minimum thickness of a BaF2 window required for a given pressure, click here.
In addition, scintillation grade BaF2 is usually used as scintillator for gamma detection. It is the fastest scintillating crystals up to now and is used in High Energy Physics Experiments.
Download BaF2 datasheet in PDF.