Substrate Material: |
BK7 optical glass |
Outer Diameter: |
50.8,+/-0.2mm |
Thickness: |
12.0,+/-0.1mm |
Surface Quality: |
Double side fine polished; 40-20 scratch and dig |
Flatness: |
<Lambda/10 @ 633nm over surface(every 25mm area) |
Chamfer: |
<0.2mm x 45 deg protection |
Coating: |
Single side silver coating, with SiO protection; Back surface polished/uncoated |
Reflectivity: |
Ravg>96% from 400nm-700nm, Ravg>96% from 700nm-2.0um |
Clear Aperture: |
>90% of reflective surface |
Parallelism: |
<3 arc minutes |
Damage Threshold: |
0.5J/cm2 (10ns pulse) |
Packaging: |
Vacuum packaged(sealed) | |