Partial Reflection (PR) coatings provide attenuation functions and
are generally applied to output mirrors of laser cavity. Our
company can design the PR coating with reflectance from 10% to
99.7% to achieve the desired performance.
Wideband PR coatings are typically used at 45 degrees angle to the
beam splitting of wideband light, such as 50/50,40/60,30/70 with
error at around 5%.
There is a kind of super wideband PR coatings that can split beam
in a wide light region from UV, visible to infrared. This coating
is widely used in optical components.
fused silica, BK7 and so on
<λ/10 @ 632.8nm
Electron beam deposited dielectric multi-layers
> Central 90% of diameter