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All Products / Optics / Windows and Diffusers / UV and IR Windows / ISP Optics Calcium Fluoride (CaF2) Wedged Windows
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38.1mm Dia., 3mm Thick, 3° Wedge, ISP Optics Calcium Fluoride (CaF2) Wedged Window | CF-WW3-38-3

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Calcium Fluoride (CaF2) Wedged Windows

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Abbe Number (vd):
94.99
Axis Orientation:
Random
Bevel:
Protective as needed
Clear Aperture (%):
85
Clear Aperture CA (mm):
32.38
Diameter (mm):
38.10 +0.00/-0.13
Thickness (mm):
3.00 ±0.13
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
18.85
Density (g/cm3):
3.18
Edges:
Fine Ground
Index of Refraction nd:
1.495
Knoop Hardness (kg/mm2):
158.3
Poisson's Ratio:
0.26
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Calcium Fluoride (CaF2)
Surface Flatness (P-V):
2λ @ 10.6μm
Surface Quality:
60-40
Type:
Protective Window
Wavelength Range (nm):
200 - 7000
Young's Modulus (GPa):
75.8
Wedge Angle:
3° ±0.25
Model Number:
CF-WW3-38-3

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 240:
Compliant
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Product Family Description

ISP Optics Calcium Fluoride (CaF2) Wedged Windows feature a 30 arcmin wedge to eliminate fringe patterns from etalon effects and to prevent cavity feedback. Calcium fluoride’s combination of low absorption and high damage threshold make these windows a popular choice for free-space lasers. Its low refractive index allows it to be used without an anti-reflective coating. ISP Optics Calcium Fluoride (CaF2) Wedged Windows feature low water solubility and offer superior hardness compared to other fluoride-based substrates, making them suitable for laser applications in harsh environments. Calcium Fluoride (CaF2) Wedged Windows provide laser output protection from environmental effects and are ideal for beam sampling applications.