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Products / Optics / Windows and Diffusers / UV and IR Windows / Calcium Fluoride (CaF2) Windows
See all 68 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12.5mm Diameter Uncoated, Calcium Fluoride Window

TECHSPEC Calcium Fluoride (CaF2) Windows

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TECHSPEC Calcium Fluoride (CaF2) Windows
Stock #47-682
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Qty 1-10
A$187.20
Qty 11+
A$164.00
Volume Pricing
Request Quote
Abbe Number (vd):
94.99
Axis Orientation:
Random
Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
11.25
Diameter (mm):
12.50 +0.0/-0.1
Thickness (mm):
2.00 ±0.1
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
18.85
Density (g/cm3):
3.18
Edges:
Fine Ground
Index of Refraction nd:
1.434
Knoop Hardness (kg/mm2):
158.3
Parallelism (arcmin):
<1
Poisson's Ratio:
0.26
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Calcium Fluoride (CaF2) Vacuum UV Grade
Surface Flatness:
λ/2
Surface Quality:
40-20
Type:
Protective Window
Wavelength Range (nm):
200 - 7000
Young's Modulus (GPa):
75.8

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Product Family Description

  • Low Absorption, High Transmission UV Grade Calcium Fluoride
  • Ideal for Applications Ranging from 200nm - 7μm
  • Low Index of Refraction

Calcium fluoride is often used in spectroscopic windows and lenses due to its high transmission from 200nm to 7μm. Its low absorption and high damage threshold makes it a popular choice for excimer laser optics. Calcium fluoride's low index of refraction allows it to be used without an anti-reflective coating. The Knoop hardness of calcium fluoride is 158.3. TECHSPEC® Calcium Fluoride (CaF2) Windows manufactured from vacuum UV grade calcium fluoride are commonly found in cryogenically cooled thermal imaging systems.

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