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.
BaF2 Windows SPECIFICATION:
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Material:
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BaF2
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Dimension Tolerance:
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+0.0, -0.1mm
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Thickness Tolerance:
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± 0.1mm
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Surface quality:
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80/50
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Clear Aperture:
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>85%
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Flatness:
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λ per 25mm
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Parallelism:
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3'
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Bevel:
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<0.25mm X 45°
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Coating:
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Upon requirement
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BaF2 Main Properties and Performance
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Transmission range (μm)
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0.15~12.5
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Transmittance
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＞90% （0.35~9μm, 3mm）
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Refractivity(2.58μm)
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1.4626
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Reflection Loss at 2.58μm
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6.8%(both faces)
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Radiation length(cm)
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2.06
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Emission peak (nm)
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310(slow); 220(fast)
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Decay constant(ns)
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620(slow); 0.6(fast)
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Light output[NaI(TI)=100%]
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20%(slow); 4%(fast)
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Knoop hardness (kg/mm2)
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82 with 500g indenter
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Solubility at 23℃(g/100gH2O)
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0.17
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Cleavage plane
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-111
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Density (g/cm3)
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4.89
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Melting Point (℃)
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1280
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Typical Sizes:
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Round Shape
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Φ5.0; Φ10.0 ; Φ12.7; Φ15.0; Φ20.0;
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Diameter(mm):
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Φ25.4; Φ30.0; Φ38.1; Φ50.8; Φ76.2
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Square Shape:
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5.0x5.0 ; 10.0x10.0 ; 15.0x15.0 ;
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WxH(mm)
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20.0x20.0; 25.0x25.0; 50.0x50.0
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Thickness(mm):
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0.5; 1.0; 1.5; 2.0; 3.0;
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4.0; 5.0; 6.0; 8.0; 10.0
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