Name: 20mm Dia., 2mm Thick, Uncoated, Magnesium Fluoride Window
Brand: TECHSPEC
SKU: 87-704
Price: €248,97

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

Magnesium Fluoride (MgF₂) Windows

Stock #87-704

€248,97

Qty 1-10
€248,97

Qty 11+
€219,54

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Abbe Number (v_d):

106.22

Bevel:

Protective as needed

Clear Aperture (%):

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 n_d:

1.377

Knoop Hardness (kg/mm²):

415

Parallelism (arcmin):

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:

λ/2

Surface Quality:

40-20

Type:

Protective Window

Wavelength Range (nm):

120 - 7000

Young's Modulus (GPa):

138

Regulatory Compliance

RoHS 2015:

Compliant

Reach 219:

Compliant

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. It has a Knoop Hardness of 415 and index of refraction of 1.38.

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