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

25mm Diameter Uncoated, Calcium Fluoride Window

TECHSPEC Calcium Fluoride (CaF2) Windows

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Stock #47-683 Other Coating Options
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- +
€138,00
Qty 1-10
€138,00
Qty 11+
€122,50
Volume Pricing
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Specifications

Abbe Number (vd):
94.99
Axis Orientation:
Random
Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
22.50
Diameter (mm):
25.00 +0.0/-0.1
Thickness (mm):
3.00 ±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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Learn More

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.

Technical Information

Compatible Mounts

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25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32 Fixed #13-788 €17,50
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25.0/25.4mm Optic Dia., E-Series Kinematic Mount Adjustable - Tip-Tilt #15-866 €35,00
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25.0mm Optic Dia., Optic Mount Fixed #64-560 €42,50
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25.0/25.4mm Optic Dia., SM1 Thin Mount, M4, Quick Start Optical Mounts Fixed #17-536 €52,50 Request Quote
25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32, Quick Start Optical Mounts Fixed #17-537 €52,50 Request Quote
2.0 - 35.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-668 €56,00
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25.0/25.4mm Optic Dia., L-Slot Direct Mount Fixed #36-410 €59,50 Request Quote
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25.0/25.4mm Optic Dia., Side Flange Direct Mount Fixed #36-414 €59,50 Request Quote
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25/25.4mm Diameter, E-Series Kinematic Mount, Quick Start Optical Mounts Adjustable - Tip-Tilt #17-521 €70,00 Request Quote
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #36-605 €70,00
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25.0/25.4mm Optic Dia., Kinematic Mount, 2-Screws Adjustable - Tip-Tilt #58-851 €82,00
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25.0/25.4mm Optic Dia., L-Slot and Rotation Direct Mount Adjustable - Rotary #36-411 €86,00 Request Quote
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5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-529 €90,00
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7.0 - 40.0 Optic Height, English Bar-Type Optic Holder Fixed #03-676 €90,00
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19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount Fixed #03-670 €96,00
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10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder Fixed #55-530 €98,00
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8.0 - 118.0 Optic Height, English Bar-Type Optic Holder Fixed #03-666 €101,00
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