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You are here: Home / Fluoride Crystal / MgF2
MgF2 Crystal- CRYLINK
MgF2 Block

Magnesium Fluoride (MgF2) is commonly used for UV windows, lenses and polarisers. It is also useful in its transmission range for some IR spectroscopy applications. 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. Windows, lenses, and prisms made of this material can be used over the entire range of wavelengths from 0.120 μm (vacuum ultraviolet) to 8.0 μm (infrared). MgF2 is tough and works and polishes well, but it is slightly birefringent and should be cut with the optic axis perpendicular to the plane of the window or lens, Generally, Magnesium Fluoride for laser use is recommended to be oriented along the optic axis to avoid birefringent effects. It is particularly useful for excimer laser application.

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Parameter

Material and Specifications
Orientation[100] or [001] < ±0.5°
Orientation Tolerance< 0.5°
Parallelism5〞
Perpendicularity3ˊ
Surface Quality10-5 (Scratch/Dig)
Wavefront Distortion<λ/4@632 nm
Surface Flatness<λ/8 @632 nm
Clear Aperture>90%
Chamfer<0.1×45°
Thickness/Diameter Tolerance±0.05 mm
Maximum DimensionsDia150 mm×60mm(C-cut)
Physical and Chemical Properties
Crystal Structuretetragonal
Lattice Constants4.64
Density3.18 g/cm3
Melting Point1255°C
Thermal Conductivity /(W·m-1·K-1@25°C)0.3
Specific Heat/ (J·g-1·K-1)1.003
Thermal Expansion /(10-6·K-1@25°C )13.7
Hardness (Mohs)4.15
Young`s Modulus /GPa138.5
Optical characteristics
Transmission Range0.11 … 7.5 µm  
Refractive Index  no = 1.3836, ne = 1.3957 @0.405 µm  
Reflective Loss 5.1% @4.0 µm; 11.2% @0.12 µm  
Poisson Ratio0.271
Index of Refraction
μmNoNeμmNoNeμmNoNe
0.11371.7805 0.11491.742 0.11791.68 
0.11981.651 0.1211.6281.6320.131.5661.568
0.141.50951.5230.151.481.4940.161.4611.475
0.171.4481.4620.1814391.4530.191.4311.444
0.21.4231.4370.221.4131.4260.2481.4031.416
0.2571.4011.4140.2661.3991.4120.281.3961.409
0.31.3931.4050.331.3891.4020.3371.3891.401
0.351.3871.40.3551.3861.3990.41.3841.396
0.5461.3791.390.71.3761.3881.0871.3731.385
1.5121.371.38221.3681.3792.51.3641.375
3.031.361.373.5711.3541.36441.3491.359
4.5461.3411.3551.3341.3435.5561.3241.332
Spectrum

Feature
Application
Literature
Feature
  • Excellent transmission from 120nm to 7um
  • Chemically stable
  • Large resistance to thermal shock
  • Irradiation does not lead to color centers
  • Uniformly distributed Co
Application
  • Window and focusing mirror for deep uv and excimer lasers
  • Optical fiber communication,
  • Wave plate,High Energy WavePlate
  • Achromatic Waveplates
  • Glanprisms
Literature
NiCr–MgF 2  spectrally selective solar absorber with ultra-high solar absorptance and low thermal emittance
Evaluation of dosimetric properties of Tb-doped MgF 2 transparent ceramics
Intrinsic electronic excitations and impurity luminescent centres in NaMgF 3 and MgF 2  doped with Yb 2þ
High performance V 2 O 5 /MgF 2 catalysts for gas-phase dehydrofluorination of 1,1,1,3,3-pentafluoropropane: Support-induced evolution of new active sites
First-principle study of the structural, electronic and optical properties of MgF 2
Effect of Fe promotion on the performance of V 2 O 5 /MgF 2 catalysts for gas- phase dehydrofluorination of 1,1,1,3,3-pentafluoropropane
Ab initio calculations of pure and Co +2 -doped MgF 2 crystals
Preparation of wide-angle and abrasion-resistant multi-layer antireflective coatings by MgF 2 and SiO 2 mixed sol
Magnesium scaffolds with two novel biomimetic designs and MgF 2 coating for bone tissue engineering
Multilayer AR coatings of TiO 2 /MgF 2 for application in optoelectronic devices

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