Metallic High Reflective Coating (Part No.: MHR)
We provides metallic high reflective coating which is made from Au, Ag, Al. These coatings are applied where a consistent high reflection over a wide spectral range is necessary. Their reflectivity is not higher than dielectrics high reflection coating, bur their spectrum can cover the near UV, visible and near-IR. In order to prevent these metallic coatings from oxidization, these coatings have dielectric overcoat.
Protected Ag: Ravg>95%@ 400 - 1000 nm
Protected Al: Ravg>85%@ 400 - 1000 nm
Protected Au: Ravg>80%@ 400 - 1000 nm
Dielectric High Reflective Coating (Part No.: DHR)
It is well known that dielectric coating can produce very high reflection (more than 99.8% at design wavelength). They are generally used in a single wavelength laser cavity where the lowest cavity loss at a center wavelength is essential. We can provide such coating with center wavelength from 350nm to 2000nm according to customer’s requirement. When selecting a suitable dielectric high reflection coating, the damage threshold requirement must be considered.
HR @ 1064 nm R>99.8%