MgF2 window
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. MgF2 is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock. It has a Knoop Hardness of 415 and index of refraction of 1.38.
Key features:
- Excellent Transmission from 120nm to 7μm
- Rugged and Durable
- Resistant to Chemical Etching
Specifications
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Material: |
MgF2 single crystal |
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Optical Axis Orientation: |
A-cut ( <100>-cut ) |
|
+/- 0.5° |
|
|
Diameter tolerance: |
+ 0 / -0.10 mm |
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Thickness tolerance: |
+ / - 0.10 mm |
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Clear aperture: |
90% of the diameter |
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Surface quality: |
20-10 scratch and dig |
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Surface accuracy: |
λ/4 @ 632.8 nm |
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Perpendicularity: |
< 10 arc min |
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Parallelism: |
15 arc seconds |
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