Depositions of reflective metallic coatings are performed with cryogenic
evaporation in our production laboratory warrantying grating performance.
Gratings are provided with a standard aluminum coating. Other standard coatings
(to improve reflectivity in certain spectral ranges) may also be requested.
We suggest:
- Above 6000 Å : IR gold
- Between 1500 Å to 6000 Å: Al
- Between 1150 Å and 1650 Å : Al+MgF2
- Below 1000 Å : UV gold or platinum or nickel
Additional coatings for specific VUV and soft X-ray applications, such as carbon or SiC are available on request for your specific applications.
VUV & soft X-ray gratings:
Reflectivity depends on the light beam incidence angle. HORIBA Jobin Yvon can help you review reflectivity and efficiency values according to your incidence angle and wavelength range.
Ordering Information
| Al + MgF2(optimized 1216-1610 Å) |
50 000 001 |
| IR Gold |
50 000 003 |
| UV Gold |
50 000 004 |
| UV Platinum | 50 000 005 |
Reflectivity for Al Coating
incident angle = 0°, unpolarized light
Reflectivity for Au Coating
incident angle = 0°, unpolarized light
Example of Reflectivity for Different Metallic Coatings
incident angle = 80°, unpolarized light
NOTE:
These reflectivity curves are for reference only and do not represent coating
specifications.
