VIS / NIR Narrowband Anti-Reflection (NAR)
400 nm ≤ λ ≤ 2.0 µm
Narrowband Anti-Reflection coatings, often referred to as "V" coatings, reduce surface reflectance to less than 0.25% at the specified center wavelength and normal incidence. "V" coatings are better suited to laser applications than single-layer AR coatings. Coatings for high power wavelengths use special materials that are able to withstand higher power than standard narrowband anti-reflection coatings. These all dielectric coatings are sensitive to polarization, wavelength and angle of incidence.
RMI STANDARD SPECIFICATIONS
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| Angle of Incidence: |
0º or 45º |
Reflectance:
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Unpolarized:
R ≤ 0.25% at 0º
R ≤ 0.5% at 45º
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| Damage Threshold: |
5 J/cm2, 10 ns pulse |
| 1064 nm |
10 J/cm2, 10 ns pulse (BK7 or UVFS) |
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Narrowband Anti-Reflection coating sample reflectance curve centered at 532 nm
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