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  • IR Windows Magnesium Fluoride MgF2 Windows

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  • IR Windows Calcium fluoride CaF2 Windows

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  • Fused Silica Windows and Quartz Windows

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MgF2 Window


IR Windows Magnesium Fluoride MgF2 Windows

MgF2 windows are used in the UV, visible and IR ranges, with approximately 94% transmission from 200 - 1000 nm, and approximately 95% transmission from 1-6µm

  • product orgin:

  • shipping port:

    Fuzhou China
  • payment:

    T/T Payment, Western Union
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IR Windows Magnesium Fluoride (MgF2) Windows

MgF2 has excellent transmission from deep in the ultraviolet region to the mid-infrared. MgF2 windows are extremely durable and introduce minimal aberrations.  It is particularly useful for Excimer laser application.

MgF2 is one crystal with Orientation. WTS offer C-Axis and random Orientation MgF2 windows.


Material: MgF2
Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.1mm
Surface quality: 80/50
Clear Aperture: >85%
Flatness: λ per 25mm
Parallelism: 3' 
Bevel: <0.25mm X 45°
Coating: Upon requirement

MgF2 Main Properties and Performance

Transmission range (μm) 0.11~7.5
Refractivity (0.7μm) n0=1.37608 ne=1.38771
Reflection Loss at 0.6μm 5.2%(both faces)
Thermal expansion coefficient (℃-1) 13.7(//axis c), 8.9(⊥axis c)
Thermal conductivity at 300K (Wm-1K-1) 0.3
Knoop Hardness (kg/mm2) 415
Solubility (g/100gH2O·0℃) 0.0002
Density (g/cm3) 3.18
Melting Point (℃) 1255

MgF2 WindowMagnesium Fluoride Window

Typical Sizes:

Round Shape Φ5.0; Φ10.0 ; Φ12.7; Φ15.0; Φ20.0; 
Diameter(mm): Φ25.4; Φ30.0; Φ38.1; Φ50.8; Φ76.2
Square Shape: 5.0x5.0 ; 10.0x10.0 ; 15.0x15.0 ; 
WxH(mm) 20.0x20.0; 25.0x25.0; 50.0x50.0
Thickness(mm): 0.5; 1.0; 1.5; 2.0; 3.0; 
4.0; 5.0; 6.0; 8.0; 10.0

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