Neutral Broadband Beamsplitter Cubes (NBCB)
- All Metal Coating
- Extreme broadband Single Layer MgF2 AR coating on all legs
- Absorption = 45% +/-5%
- Spectral range : 350-2100nm
These all-metal coatings both absorb and reflect the incident radiation. These beamsplitters have high absorption and high neutrality over a range covering the visible and near infra-red. R and T are about 27% with 45% absorption.
| Substrate: | BK7A |
| Surface Flatness: | < λ / 8 @ 633 nm |
| Surface Quality: | <20/10 |
| Beam Deviation: | < 3 arc min |
| Dimension Tolerance: | < + 0.00 / -0.20 mm |
| AR Coating: | Single layer MgF2 coating |
| T & R average values: | 27% ± 3% |
| Clear Aperture: | >85% of central circular dimension |
| Spectral Range: | 350 nm to 2100 nm |
| Temperature Range: | - 50° C to 80° C |
| Absorption: | 45% ± 5% |
