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Barium Fluoride (BaF₂) is a crystalline compound of barium and fluoride used in optical applications in the NIR, VIS and MWIR spectrums. Barium Fluoride is resistant to high energy radiation, performing well in dry temperatures up to 800°C, but transmission in the Vacuum UV (VUV) degrades over time in a moist atmosphere and the material is susceptible to water corrosion at 500°C.

Barium Fluoride is ideal for use as a VUV window where high radiation resistance is required from, for example, gamma and x-ray. Other applications include thermography and medical thermology equipment, laser, and astronomy.

Barium Fluoride transmits at over 90% between the 0.2-10μm spectrum beyond which transmission decreases, reaching 0% at about 0.18µm and 14µm. It is a relatively soft material with a hardness of HK82, and can be BBAR coated for use in the 0.8-2.5µm, 3.0-5.0µm and 1.0-5.0 ranges.

Knight Optical supply a range of quality BaF₂ windows available between 13mm diameter to 38mm diameter direct from stock. Our stock windows may be resized at short notice to fit customer's individual requirements.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality Barium Fluoride windows and service can improve your instrumentation and supply chain experience

 

Material:
Dimensions:
Diameter:
Thickness:
Clear Aperture:
Surface Quality:
Parallelism:
Barium Fluoride
± 0.2mm
+0/-0.2mm
± 0.2mm
80%
<60-40 scratch/dig
5 arcmin  

Note: Stectroscopic Standard Grade rectangular windows are sometimes cut from the same sized diameter, so may have curved edges as a result. These types also come in drilled (with 30mm spacing)/undrilled versions for use alone or as a pair.

Mounting into cells.
Edging down to smaller sizes.

42 Items

Name Type Diameter (mm) Length (mm) Width (mm) Thickness (mm) Coating Drilled Material Price Buy
WBF1005 Standard 10 0.5 Uncoated Barium Fluoride
$50.25
WBF1001 Standard 10 1 Uncoated Barium Fluoride
$40.17
WBF1002 Standard 10 2 Uncoated Barium Fluoride
$44.48
WBF1202 Standard 12 2 Uncoated Barium Fluoride
$44.48
WBF1305 Standard 13 0.5 Uncoated Barium Fluoride
$56.30
WBF1300 Standard 13 1 Uncoated Barium Fluoride
$44.48
WBF1301 Standard 13 2 Uncoated Barium Fluoride
$44.48
WBF1500 Standard 15 2 Uncoated Barium Fluoride
$56.30
WBF1605 Standard 16 0.5 Uncoated Barium Fluoride
$64.64
WBF1601 Standard 16 1 Uncoated Barium Fluoride
$56.30
WBF1603 Standard 16 3 Uncoated Barium Fluoride
$64.64
WBF1902 Standard 19 2 Uncoated Barium Fluoride
$60.26
WBF2000 Standard 20 1 Uncoated Barium Fluoride
$80.34
WBF2002 Standard 20 2 Uncoated Barium Fluoride
$60.26
WBF2205 Standard 22 0.5 Uncoated Barium Fluoride
$90.35
WBF2201 Standard 22 1 Uncoated Barium Fluoride
$94.52
WBF2500 Standard 25 1 Uncoated Barium Fluoride
$80.34
WBF2501 Standard 25 2 Uncoated Barium Fluoride
$90.35
WBF2203 Standard 25 3 Uncoated Barium Fluoride
$61.79
WBF2504 Standard 25 4 Uncoated Barium Fluoride
$90.35
WBF2505 Standard 25.4 0.5 Uncoated Barium Fluoride
$100.43
WBF2510 Standard 25.4 1 Uncoated Barium Fluoride
$80.34
WBF2502 Standard 25.4 2 Uncoated Barium Fluoride
$90.35
WBF2540 Standard 25.4 4 Uncoated Barium Fluoride
$94.52
WBF2550 Standard 25.4 5 Uncoated Barium Fluoride
$100.43
WBF2506 Standard 25.4 6 Uncoated Barium Fluoride
$110.51
WBF3001 Standard 30 1 Uncoated Barium Fluoride
$90.35
WBF3002 Standard 30 2 Uncoated Barium Fluoride
$90.35
WBF3200 Spectroscopic Grade 32 3 Uncoated Undrilled Barium Fluoride
$110.51
WBF3201 Spectroscopic Grade 32 3 Uncoated Drilled Barium Fluoride
$150.68
WBF3505 Standard 35 5 Uncoated Barium Fluoride
$173.75
WBF3800 Standard 38 3 Uncoated Barium Fluoride
$150.68
WBF4000 Standard 40 5 Uncoated Barium Fluoride
$220.94
WBF5003 Standard 50 3 Uncoated Barium Fluoride
$297.46
WBF6305 Standard 63 5 Uncoated Barium Fluoride
$532.37
WBF7503 Standard 75 3 Uncoated Barium Fluoride
$451.75
WBF1010 Standard 10 10 1 Uncoated Barium Fluoride
$54.21
WBF1616 Standard 16 16 1.5 Uncoated Barium Fluoride
$70.20
WBF2010 Standard 20 10 1 Uncoated Barium Fluoride
$70.20
WBF2512 Standard 25 12 2 Uncoated Barium Fluoride
$90.35
WBF4123 Spectroscopic Grade 41 23 4 Uncoated Undrilled Barium Fluoride
$220.94
WBF4124 Spectroscopic Grade 41 23 4 Uncoated Drilled Barium Fluoride
$261.11

42 Items

1

BaF₂ Windows

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