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BaF2 Window


IR Windows Barium Fluoride BaF2 Window

Barium fluoride (BaF2) shows good optical transmission over UV-IR windows in 0.15μm~12.5μm.
  • product orgin:

  • shipping port:

    Fuzhou China
  • payment:

    T/T Payment, Western Union
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IR Windows Barium fluoride (BaF2) Windows

Barium fluoride (BaF2) shows good optical transmission over wide spectrum range, which can be used as UV-IR windows in 0.15μm~12.5μm. It also presents excellent scintillation properties, which is widely used in high energy physics, nuclear physics and nuclear medical instruments.

WTS make customized coated and uncoated BaF2 windows.

Note:When handling BaF2, please always wear gloves as it is a hazardous material.


Material: BaF2
Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.1mm
Surface quality: 80/50
Clear Aperture: >85%
Flatness: λ per 25mm
Parallelism: 3' 
Bevel: <0.25mm X 45°
Coating: Upon requirement

BaF2 Main Properties and Performance

Transmission range (μm) 0.15~12.5
Transmittance 90% 0.35~9μm, 3mm
Refractivity(2.58μm) 1.4626
Reflection Loss at 2.58μm 6.8%(both faces)
Radiation length(cm) 2.06
Emission peak (nm) 310(slow); 220(fast)
Decay constant(ns) 620(slow); 0.6(fast)
Light output[NaI(TI)=100%] 20%(slow); 4%(fast)
Knoop hardness (kg/mm2) 82 with 500g indenter
Solubility at 23℃(g/100gH2O) 0.17
Cleavage plane -111
Density (g/cm3) 4.89
Melting Point (℃) 1280
Barium Fluoride WindowBaF2 Windows

Typical Sizes:

Round Shape Φ5.0; Φ10.0 ; Φ12.7; Φ15.0; Φ20.0; 
Diameter(mm): Φ25.4; Φ30.0; Φ38.1; Φ50.8; Φ76.2
Square Shape: 5.0x5.0 ; 10.0x10.0 ; 15.0x15.0 ; 
WxH(mm) 20.0x20.0; 25.0x25.0; 50.0x50.0
Thickness(mm): 0.5; 1.0; 1.5; 2.0; 3.0; 
4.0; 5.0; 6.0; 8.0; 10.0

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If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!

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