MgF2 Optical Crystals
MgF2 optical crystalsMagnesium Fluoride (MgF2) is commonly used for UV windows,Website:, 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.Features:Excellent Transmission from 120nm to 7μmRugged and DurableResistant to Chemical Etching
MgF2 ApplicationsVUV/UV Visible/IR Scintillator ■ Cherenkov ■ HF/DF Laser Windows
■ CO Laser Windows ■ Infrared Domes
■ Eu Doped X-Ray Windows ■ Microscope Apochromat
■ Excimer Beam Delivery Optics ■ Photomultiplier Windows
■ Excimer Laser Window Options ■ PID Lamp
■FTIR Beamsplitter Substrates ■Polarizers
■Gas Analyzer Windows & Lenses ■Rochon Prism■HDTV Lenses ■Spectrograph Camera Lenses■Telescope LensesSpecificationPhysical PropertiesCrystal typetetragonalLattice constant, Åa=4.6, c=3.06Density, g/cm33.177Melting point,℃1255Refractive index @ 1.0μmno=1.3796,ne=1.3852Transmission range, μm0.12-7Specifications for MgF2 windowsSpectal rangeUV, IRSurface quality40-20 S & DClear aperture90% of the diameterdiameter tolerance+0, -0.1 mmThickness tolerance±0.1Surface flatnessλ/4 @ 633 nmparallelism<3 arcminPolishing Specification for Optical GradeⅠOrientation Tolerence< 1°Thickness/Diameter Tolerance±0.10 mmSurface Flatness<(λ-2λ)@632nmWavefront Distortion<(2-4)λ@632nmSurface Quality80/50Parallel10ˊPerpendicular60ˊClear Aperture>90%Chammfer<0.2×45°Polishing Specification for Optical Grade ⅡOrientation Tolerence< 0.5°Thickness/Diameter Tolerance±0.10 mmSurface Flatness<(λ/2-λ/4)@632nmWavefront Distortion<(1-2)λ@632nmSurface Quality60/40Parallel1ˊPerpendicular30ˊClear Aperture>90%Chammfer<0.2×45°Polishing Specification for Optical Grade ⅢOrientation Tolerence< 0.2°Thickness/Diameter Tolerance±0.02 mmSurface Flatness(λ/4-λ/6)@632nmWavefront Distortion<(λ-λ/2)@632nmSurface Quality40/20Parallel45〞Perpendicular20ˊClear Aperture>90%Chammfer<0.2×45°Standard productsMaterialProductsAperture diamensions, mmThickness,mmSubstratecoatingsProduct IDPriceMgF2windowsdia101 dia102 dia12.51.5 dia12.52 dia12.72 dia203 dia25.43 dia25.44 dia38.15 dia50.85 dia50.86.5 1/2waveplate1/4waveplatedia10 dia12.5 dia12.7 dia15 dia20 dia25.4 dia38.1 光轴方向平行于端面与侧边成45°角25x25xD 18.5x18.5x1.75 10x10x4.5 50x18x2.0 光轴方向与端面成45°角dia16x1.7 20x20x1.5 光轴方向平行于端面与侧边成特殊角12.7x12.7xD 12.7x12.7xD20°12′ 12.7x12.7xD19°23′ 12.7x12.7xD30°6′ 12.7x12.7xD
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