Broadband Neutral Plate Beamsplitters (BNEB)

- Extremely neutral over visible spectrum
- Low power applications
These low power beamsplitters have an Inconel alloy coating on the front surface and a broadband anti-reflection coating on the back. They split the beam by approximately equal reflection and absorption. Inconel has a spectrally flat reflectivity over the visible spectrum and considerably beyond that range making these beamsplitters useful for applications spanning visible and near infra-red wavelengths.
Substrate: |
UV Fused Silica
BK7A |
Surface Flatness: |
< λ / 8 @ 633 nm |
Surface Quality: |
<10/5 |
Wedge: |
< 3 arc min |
Diameter Tolerance: |
< + 0.00 / – 0.20 mm |
Thickness Tolerance: |
< ± 0.25 mm |
Clear Aperture: |
> 85% of central dimension |
Bevel: |
0.3 mm (typical) x 45° |
Rave: |
29% ± 3% @ visible |
Tave: |
29% ± 3% @ visible |
Absorption: |
42% ± 4% @ visible |
Broadband Neutral Plate Beamsplitters (BNEB)