MgF (Magnesium Fluoride) is a positive uniaxial crystal with a very high optical transmittance from the vacuum UV to IR. It also has a large resistance to mechanical and thermal shock, to optical radiation, and is chemically stable, making it a very useful materials for UV and IR optics.
Newlight Photonics offers a-cut (or  cut) MgF2 crystals for the maximum birefringence. c-cut (or cut along the optical axis) with the minimum birefringence, or random-cut (cut along a random axis) MgF2 windows are also available. The thickness can be made as thin as 0.1mm.
|Part No.||Aperture||Thickness||Orientation||Coating||Price||Availability||Add to Cart|
Basic Properties of MgF2 Crystal
|Transparency Range: 130 - 9000 nm||
|Crystal Symmetry: Tetragonal|
|Lattice Constants: a= b=4.621Å; c=3.053Å|
|Density: 3.18 g/cm3|
|Thermo-Optic Coefficients (@20 deg, 632 nm)
dno/dT= 1.1 x 10-6 /oC
dne/dT= 0.58 x 10-6/oC
|Optical Homogeneity: Δn < 10-6/cm|
|Mohs Hardness: ~ 5|
|Thermal Conductivity: 11.6 W/m/K|
|Thermal Expansion Coefficients:|| αa = 13.8 x 10-6/K
αc = 8.5 x 10-6/K
Sellmeier Equations (λ in µm):
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