Aluminum (AL)
Bare aluminum provides excellent reflectivity from the UV to the IR. Unfortunately, it also oxidizes rapidly and use of a dielectric overcoat is usually required to prevent degradation. Since no overcoat is ideal for all applications, materials best suited to the intended application should be chosen.
Aluminum-Silicon Monoxide (AL SIO)
Benefits
- General purpose Aluminum coating for use in the visible spectrum
- Inexpensive
Trade-Offs
- Poor UV reflectance
|
Reflectivity |
>85% average, 400-800nm |
|
Wavelength Range |
350nm to 3000nm |
|
Substrates |
Fused Quartz/Fused Silica (all grades) |
|
Durability |
Per MIL-C-48497A |
|
Order As |
AL SIO |
|
Please Specify |
Substrate Material/Part Number |
Aluminum-Magnesium Fluoride (AL MGF2)
Benefits
- General purpose Aluminum coating for use in the UV and visible spectra.
- Relatively inexpensive
Trade-Offs
- Very poor durability, special care must be taken while handling or cleaning
|
Reflectivity |
>85% average, 200-800nm |
|
Wavelength Range |
200nm to 3000nm |
|
Substrates |
Fused Quartz/Fused Silica (all grades) |
|
Durability |
Per MIL-C-48497A |
|
Order As |
AL MGF2 |
|
Please Specify |
Substrate Material/Part Number |
Enhanced Aluminum (AL ENH)
Benefits
- Special Aluminum coating for higher reflectivity in the visible spectrum.
Trade-Offs
- Poor out-of-band reflectivity
|
Reflectivity |
>93% average, 450-750nm |
|
Wavelength Range |
400nm to 800nm |
|
Substrates |
Fused Quartz/Fused Silica (all grades) |
|
Durability |
Per MIL-C-48497A |
|
Order As |
AL ENH |
|
Please Specify |
Substrate Material/Part Number |