Magnesium Fluoride (MgF2)

Magnesium Fluoride has high transmittance from 200nm - 700nm. It is commonly used for windows, lenses and other optical components for its range of uses from UV to Infrared. It offers higher resitance to water than similar fluorides and is utilized in systems where durability is important.

Roditi's optical MgF2 material is single-crystal optical quality, fabricated to order.

Substance Form Diameter Range Thickness Range Transmission Range (µm) Surface Finish
Magnesium Fluoride Single Crystal 5mm - 200mm 3mm - 50mm 0.12 - 7.00 Fine Ground / Optical Polish

Material Properties

Transmission Range 0.12 - 7.0 microns
Refractive Index 1.37608 @ 0.7 microns (2 surfaces)
Reflection Loss 5.2% @ 0.6 microns (2 surfaces)
Absorption Coefficient 40 x 10-3 @ 2.7µm
Energy Gap 11eV
Density 3.18 gm/cc
Melting Point 1585°C
Poisson Ratio 0.271
Hardness 415 Knoop
Crystal Structure Tetragonal