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All Products / Optics / Windows and Diffusers / Visible Windows / Magnesium Fluoride (MgF2) Windows
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Dia., 2mm Thick, Uncoated, Magnesium Fluoride Window

Magnesium Fluoride (MgF2) Windows

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Stock #87-704 3-4 days
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£231.63
Qty 1-10
£231.63
Qty 11+
£208.67
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Abbe Number (vd):
106.22
Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
18.00
Diameter (mm):
20.00 +0.0/-0.1
Thickness (mm):
2.00 ±0.1
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
13.7
Density (g/cm3):
3.18
Edges:
Fine Ground
Index of Refraction nd:
1.377
Knoop Hardness (kg/mm2):
415
Parallelism (arcmin):
<1
Poisson's Ratio:
0.271
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Magnesium Fluoride (MgF2)
Surface Flatness (P-V):
λ/2
Surface Quality:
40-20
Type:
Protective Window
Wavelength Range (nm):
120 - 7000
Young's Modulus (GPa):
138

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Certificate of Conformance:
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Product Family Description

  • Excellent Transmission from 120nm to 7μm
  • Rugged and Durable
  • Resistant to Chemical Etching

TECHSPEC® Magnesium Fluoride (MgF2) Windows offer excellent broadband transmission from the deep-UV to the mid-infrared. DUV transmission makes them ideal for use at the Hydrogen Lyman-alpha line and for UV radiation sources and receivers, as well as excimer laser applications. MgF2 is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock. TECHSPEC® Magnesium Fluoride (MgF2) Windows have a Knoop Hardness of 415 and index of refraction of 1.38. The windows are offered in diameters ranging from 5 to 75mm.