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SNG01
| Test Grating For Scanning Near Field Optical Microscope |
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Grating description |
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Substrate: |
quartz (0,5 mm thickness) |
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Substrate size: |
10x10mm |
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Rhomb material: |
vanadium |
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Thickness of vanadium layer |
about 20-30 nm |
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Active area: |
central diameter 3 mm array |
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Transmission coefficient through metal coating (rhomb) |
< 20% |
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Reflection coefficient from metal coating (rhomb) |
> 40% |
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R curvature of rhomb |
< 50 nm |
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