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.
MgF2 Windows SPECIFICATION:
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Material:
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MgF2
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Dimension Tolerance:
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+0.0, -0.1mm
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Thickness Tolerance:
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± 0.1mm
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Surface quality:
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80/50
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Clear Aperture:
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>85%
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Flatness:
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λ per 25mm
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Parallelism:
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3'
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Bevel:
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<0.25mm X 45°
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Coating:
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Upon requirement
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MgF2 Main Properties and Performance
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Transmission range (μm)
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0.11~7.5
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Refractivity (0.7μm)
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n0=1.37608 ne=1.38771
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Reflection Loss at 0.6μm
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5.2%(both faces)
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Thermal expansion coefficient (℃-1)
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13.7(//axis c), 8.9(⊥axis c)
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Thermal conductivity at 300K (Wm-1K-1)
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0.3
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Knoop Hardness (kg/mm2)
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415
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Solubility (g/100gH2O·0℃)
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0.0002
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Density (g/cm3)
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3.18
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Melting Point (℃)
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1255
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Typical Sizes:
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Round Shape
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Φ5.0; Φ10.0 ; Φ12.7; Φ15.0; Φ20.0;
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Diameter(mm):
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Φ25.4; Φ30.0; Φ38.1; Φ50.8; Φ76.2
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Square Shape:
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5.0x5.0 ; 10.0x10.0 ; 15.0x15.0 ;
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WxH(mm)
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20.0x20.0; 25.0x25.0; 50.0x50.0
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Thickness(mm):
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0.5; 1.0; 1.5; 2.0; 3.0;
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4.0; 5.0; 6.0; 8.0; 10.0
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