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Magnesium Fluoride Windows
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Magnesium
Fluoride (MgF2 window) has excellent transmission in the UV.
This material
can reach transmission greater than 50% at 121.6nm and it
can be used for excimer & Nd:YAG laser optics.
MgF2 is
relatively soft and somewhat hygroscopic so polishing, coating
and handling are more critical than for Fused Silica windows.
The quality of a UV window can be extremely critical, it should
be of high purity and polish in order not to affect the optical
system.
| Main Specifications
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Super
Precision |
High
Precision |
Standard
Precision |
| Material |
UVU grade MgF2
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| Size |
Dia 5.0~80.0mm x thickness
0.5~10.0mm |
| Diameter
Tolerance |
+0/-0.10mm |
| Thickness
Tolerance |
±0.10mm
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| Clear
Aperture |
>
85% |
| Flatness
(@633nm) |
l
/10 |
l
/4
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1
l per 25mm
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| Parallelism |
<1 arc
minute |
<1 arc
minute |
<3~5
arc minutes |
| Surface
Quality (S/D) |
20/10 |
40/20 |
60/40 |
| Bevel |
0.25mm x
45° |
| Coating |
Available
upon request
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Standard Products
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Part No. |
Diameter (mm) |
Thickness (mm) |
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WIN-5101 |
12.7 |
2.0 |
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WIN-5102 |
25.4 |
4.0 |
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WIN-5103 |
38.1 |
5.0 |
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WIN-5104
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50.8
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5.0
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