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See all 60 Products in Family

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Diameter Uncoated, Calcium Fluoride Window

TECHSPEC Calcium Fluoride (CaF2) Windows

Stock #47-683

A$200.00 Other Coating Options

Qty 1-10
A$200.00

Qty 11
A$180.00

Volume Pricing
Request Quote

eDrawings: eprt IGES PDF Drawings STEP: step

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Abbe Number (v_d):

94.99

Axis Orientation:

Random

Bevel:

Protective as needed

Clear Aperture (%):

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 n_d:

1.434

Knoop Hardness (kg/mm²):

158.3

Parallelism (arcmin):

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

REACH 201:

Compliant

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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25.0/25.4mm Optic Dia., Precision Gimbal Mount	#54-999	A$411.60 Qty 5+ A$370.80 Request Quote	3-5 days ×
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder	#03-666	A$152.40 Qty 10+ A$137.20 Request Quote	3-5 days ×
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder	#03-669	A$146.00 Qty 10+ A$131.60 Request Quote	3-5 days ×
7.0 - 40.0 Optic Height, English Bar-Type Optic Holder	#03-676	A$136.00 Qty 10+ A$122.40 Request Quote	3-5 days ×
5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder	#55-529	A$136.00 Qty 10+ A$122.40 Request Quote	3-5 days ×
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder	#55-530	A$146.00 Qty 10+ A$131.60 Request Quote	3-5 days ×
2.0 - 35.0mm Optic Dia., Three-Screw Adjustable Ring Mount	#03-668	A$81.60 Qty 10+ A$73.60 Request Quote	3-5 days ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount	#03-670	A$138.80 Qty 10+ A$125.20 Request Quote	3-5 days ×
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount	#36-605	A$102.00 Qty 10+ A$92.00 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., Optical Cell Assembly	#36-461	A$126.00 Qty 10+ A$113.60 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., Kinematic Mount, 2-Screws	#58-851	A$158.40 Qty 5+ A$142.80 Request Quote	In Stock ×
25.0/25.4mm Optic Dia., Kinematic Mount, 3-Screws	#58-854	A$174.40 Qty 5+ A$157.20 Request Quote	In Stock ×
25.0mm Optic Dia., Optic Mount	#64-560	A$61.20 Qty 10+ A$55.20 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., L-Slot Direct Mount	#36-410	A$86.40 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., L-Slot and Rotation Direct Mount	#36-411	A$126.40 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., Side Flange Direct Mount	#36-414	A$86.40 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, M4	#13-787	A$25.60 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32	#13-788	A$25.60 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., 5 Axes Optical Mount	#13-776	A$593.60 Qty 5+ A$564.00 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., X-Y Translating Optic Mount	#62-956	A$360.40 Qty 5+ A$342.40 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., X-Y-Z Translating Optic Mount	#62-959	A$708.40 Qty 5+ A$637.60 Request Quote	3-5 days ×
4.0 - 36.0mm Optic Dia., Self-Centering Jaw Clamp	#16-077 New ×	A$208.00 Qty 5+ A$187.20 Request Quote	3-5 days ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp	#16-078 New ×	A$544.00 Qty 5+ A$489.60 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., E-Series Kinematic Mount	#15-866 New ×	A$62.40 Qty 10+ A$59.20 Request Quote	3-5 days ×