BF-WW Barium Fluoride BaF2 IR Wedged Windows

BF-WW Barium Fluoride BaF2 30 min IR Wedged Windows ISP Optics
 
  • SW11100
Substrate Material BaF2; Uncoated; Diameter 12.7-50.8 mm; Thickness 2.0-6.0 mm; Angle 0.5°/30... more
Product information "BF-WW Barium Fluoride BaF2 IR Wedged Windows"

Substrate Material BaF2; Uncoated; Diameter 12.7-50.8 mm; Thickness 2.0-6.0 mm; Angle 0.5°/30 arcmin; Flatness 2 Waves at 633 nm; Surface Finish 60/40

ISP Optics’ BF-WW series of Barium Fluoride (BaF2) 30 min infrared wedged windows or infrared wedges is available with diameters ranging from 12.7 to 50.8 mm and a diameter tolerance of +0/-0.13 mm. Thickness of this series ranges from 2.0 to 6.0 mm, with a thickness tolerance of ±0.13 mm. The angle of these infrared wedged windows is 30 arcmin or 0.5°, with an angle tolerance of ±15 arcmin.

Barium Fluoride (BaF2) is an optical material that shows good optical transmission in the visible domain, but also in UV, SWIR and MWIR ranges. Transmission is higher than 90% from about 250 nm up to approximately 9,000 nm. This low refractive index material is diamond-turnable and can be mono- or poly-crystalline. Available sizes are slightly smaller than CaF2, while the material is more expensive.

Barium Fluoride is soft and brittle, its mechanical strength is 30% lower than that of Calcium Fluoride. Also, BaF2 shows very low thermal stability – in fact BaF2 has the lowest thermal stability of all infrared materials and crystals. It is susceptible to thermal shock, this is the single biggest problem with this material.

Key Features:

  • Substrate Material: Barium Fluoride (BaF2)
  • Angle: 30 arcmin / 0.5°
  • Angle Tolerance: ±15 arcmin
  • Diameter: 12.7 to 50.8 mm
  • Diameter Tolerance: +0/-0.13 mm
  • Thickness: 2.0 to 6.0 mm
  • Thickness Tolerance: ±0.13 mm
  • Clear Aperture: 85%
  • Parallelism: 3 arcmin
  • Flatness: 2 Waves at 633 nm
  • Surface Finish: 60/40
  • Multiple BBAR and Custom Coatings Available

Applications: UV, VIS, SWIR, MWIR; Thermal Imaging; Astronomy; Lasers

Product Group: IR Wedged Windows
Manufacturer Series Name: BF-WW Barium Fluoride BaF2 30 min
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