| OFR manufactures and maintains a stock of standard Front-Surface Mirrors, with opaque, vacuum-deposited metallic coatings on low-expansion glass substrates. These coatings are not intended for high-power laser applications. |
| Material |
Pyrex |
| Dimensions |
|
Diameter
|
+ 0 / - 0.1 mm |
Thickness
|
± 0.1 mm |
Parallel
|
< 5 minutes |
| Optical |
|
Flatness
|
1/4 - 1/10 wave |
Polish
|
20/10 |
Rear Surface
|
Fine ground |
|
Mirror Types
- Ultraviolet (MU series Aluminum)
- VIS-NIR (M series Aluminum)
- Hard Gold (MR series Gold)
- High Reflectance (MH series Aluminum)
Ultraviolet (MU series Aluminum)
This is an aluminum coating with a magnesium fluoride overcoat which protects the aluminum and enhances reflectivity for short wavelengths. This coating can be somewhat delicate, and care should be taken when cleaning.
Catalog
Number |
Spectra
lRange |
Dimensions |
Coating/
Overcoat |
Reflectance |
Surface
Flatness |
| MU-25 |
160 nm - Far IR |
1" dia. x ¼" |
Aluminum/MgF2 |
60-90% |
¼-wave |
| MU-51 |
160 nm - Far IR |
2" dia. x ¼" |
Aluminum/MgF2 |
60-90% |
¼-wave |
VIS-NIR (M series Aluminum)
This is the most common of the "aluminized" mirror coatings. It is an aluminum coating with a protective overcoat of SiO.
Catalog
Number |
Spectral
Range |
Dimensions |
Coating/
Overcoat |
Reflectance |
Surface
Flatness |
| M-25 |
380 nm - Far IR |
1" dia. x ¼" |
Aluminum/SiO |
Above 86% |
¼-wave |
| M-51 |
380 nm - Far IR |
2" dia. x ¼" |
Aluminum/SiO |
throughout |
¼-wave |
| M-76 |
380 nm - Far IR |
3" dia. x ½" |
Aluminum/SiO |
visible |
¼-wave |
| M-102 |
380 nm - Far IR |
4" dia. x ¾" |
Aluminum/SiO |
spectrum |
¼-wave |
| M-152 |
380 nm - Far IR |
6" dia. x 1" |
Aluminum/SiO |
|
¼-wave |
High Reflectance (MH series Aluminum)
Enhanced aluminum mirror. Dielectric overcoat enhances reflectivity in the VIS and IR.
Catalog
Number |
Spectral
Range |
Dimensions |
Coating/
Overcoat |
Reflectance |
Surface
Flatness |
| MH-25 |
425 nm - Far IR |
1" dia. x ¼" |
Aluminum/dielectric |
Above 95% |
¼-wave |
| MH-51 |
425 nm - Far IR |
2" dia. x ¼" |
Aluminum/dielectric |
Above 95% |
¼-wave |
Interferometric Quality Mirrors (MI series Aluminum)
Same coating as the above MH series mirror. Polished
to 1/20 wave flatness for use with interferometric applications.
Catalog
Number |
Spectral
Range |
Dimensions |
Coating/
overcoat |
Reflectance |
Surface
Flatness |
| MI-25 |
425 nm - Far IR |
1" dia. x ¼" |
Aluminum/dielectric |
Above 95% |
1/20 -wave |
| MI-51 |
425 nm - Far IR |
2" dia. x ½" |
Aluminum/dielectric |
Above 95% |
1/20 -wave |
| MI-76 |
425 nm - Far IR |
3" dia. x ½" |
Aluminum/dielectric |
Above 95% |
1/20 -wave |
| MI-102 |
425 nm - Far IR |
4" dia. x ¾" |
Aluminum/dielectric |
Above 95% |
1/20 -wave |
| MI-152 |
425 nm - Far IR |
6" dia. x 1" |
Aluminum/dielectric |
Above 95% |
1/20 -wave |
Hard Gold (MR series Gold)
Hard gold coating with IR enhancing overcoat.
Catalog
Number |
Spectral
Range |
Dimensions |
Coating/
Overcoat |
Reflectance |
Surface
Flatness |
| MR-25 |
700 nm - Far IR |
1" dia. x ¼" |
Protected Gold |
98.50% |
¼-wave |
| MR-51 |
700 nm - Far IR |
2" dia. x ¼" |
Protected Gold |
98.50% |
¼-wave |
|
