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Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window

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Wuhan Siwer Optics Co.,Ltd
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Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window

Brand Name : Wuhan Siwer Optics

Place of Origin : Wuhan,China

MOQ : 5 pieces

Price : 20-98USD/piece

Payment Terms : T/T, Western Union

Supply Ability : 1000 pieces/month

Delivery Time : 3-5 weeks

Packaging Details : 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler

Material : Calcium Fluoride(CaF2)

Size tolerance : +/-0.1mm

Chamfer : 0.2-0.5mm

Surface quality : 60/40

Surface flatness : Lambda/4 in 25.4mm

Parallelism : 0.01mm

Standard coating : uncoated or customized

Size range : 3-120mm

Usage : 192nm Analyzer

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0.4mm thickness ultra thin deep UV 192nm wavelength CaF2 window

High purity single crystal CaF2 material has excellent transmittance in UV, but it still has a large absorption in the wavelength range below 200nm. In order to reduce the absorption of deep UV light by CaF2 window, we need to make the thickness of the window very thin.
CaF2 material is easy to be broken., which greatly increases the processing difficulty of ultra-thin CaF2 window. Siwer optics can produce large size and super thin CaF2 windows, and provide you with high quality customized services.

The thickness of CaF2 window with diameter less than 25.4mm can be 0.2mm

Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window

Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window

Optical Properties of CaF2 Window

Material Calcium Fluoride
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Parallelism 1 arc min
Surface Quality 60-40 Scratch-Dig
Surface Flatness
(Plano Side)		 λ/2 at 633nm
Surface Irregularity
(Peak to Valley)		 λ/2 at 633nm
Clear Aperture 90%

Calcium Fluoride properties

Chemical Formula CaF2
Crystal Class Cubic, cleaves [111] plane
Lattice Constant, Å 5.46
Density, g/cm3 (20 °C) 3.18
Molecular Weight 78.08
Reflection Loss 5.4% at 5 μm
Absorption Coefficient 7.8 x 10-4 cm-1 @ 2.7 μm
Dielectric Constant for 105 Hz 6.76
Melting Temperature, K 1630
Thermal Conductivity, W/(m K) at 273 K 10
Thermal Expansion, 1/K at 300 K 18.9 x 10-6
Specific Heat, cal/(g K) at 273 K 0.204
Debye Temperature, K 510
Young's Modulus, GPa 75.79
Rupture Modulus, GPa 0.0365
Shear Modulus, GPa 33.76
Bulk Modulus, GPa 83.03
Poisson's Ratio 0.28
Knoop Hardness, kg/mm2 178 [100], 160 [110]

Infrared Elements Selection Guide

Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window
Production process

Ultra Thin Deep UV Infrared Window , 192nm Wavelength CaF2 Calcium Fluoride Window


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