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Optical IR Calcium Fluoride CaF2 Infrared Window For Infrared Application

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Minimum Order Quantity: 5 pieces
Price: 20-98USD/piece
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Delivery Time: 3-5 weeks
Payment Terms: T/T, Western Union
Supply Ability: 1000 pieces/month
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Detail Information
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: 180-8000nm

Product Description

High quality optical IR Calcium Fluoride CaF2 windows for Infrared application

CaF2 is commonly used for applications requiring high transmission in the infrared and ultraviolet spectral ranges. Its extremely
high laser damage threshold allows it to be used with excimer lasers. The material exhibits a low refractive index, varying from
1.35 to 1.51 within its usage range of 180 nm to 8.0 μm. Calcium fluoride is also fairly chemically inert and offers superior
hardness compared to its barium fluoride, magnesium fluoride, and lithium fluoride cousins. Calcium Fluoride has widespread IR application as windows, prisms and other lenses.

 

Optical IR Calcium Fluoride CaF2 Infrared Window For Infrared Application

 

Optical IR Calcium Fluoride CaF2 Infrared Window For Infrared Application

 


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

Optical IR Calcium Fluoride CaF2 Infrared Window For Infrared Application
Production process

Optical IR Calcium Fluoride CaF2 Infrared Window For Infrared Application

Contact Details
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