Medium Extinction Broadband Polarizing Cube Beamsplitter (BPBM)

- Broadband visible use only (440nm – 680nm)
- Low power applications, cemented cubes
- Medium extinction ratio
These polarizing cube beamsplitters provide a high degree of polarization over a broad visible spectral range. They are made by cementing the prisms together making them unsuitable for high power use. They use BK7 prisms and provide a medium extinction ratio of 100: 1.a
Material: |
BK7A |
Surface Flatness: |
< λ / 8 @ 633 nm |
Surface Quality: |
<20/10 |
Beam Deviation: |
< 3 arc min |
Dimension Tolerance: |
< + 0.00 / – 0.20 mm |
Extinction Ratio: |
> 100: 1 |
AR Coating: |
< 0.5% per face |
Transmission of p-polarization: |
T average > 90% |
Reflectance of s-polarization: |
R average > 99.8% |
Absorption: |
Negligible |
Damage Thresholds: |
> 0.5 J/cm2 (10 ns) |
Clear Aperture: |
> 85% of central circular dimension |
Temperature Range: |
– 50° C to 80° C |
Medium Extinction Broadband Polarizing Cube Beamsplitter (BPBM)