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Polarizing Cube Beamsplitters |
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Polarizing Cube Beamsplitters
Polarizing Cube Beamsplitters are formed
from two right angle, 45° prisms permanently cemented together. The
hypotenuse is coated with an all dielectric, polarization sensitive
coating designed to separate an incident, unpolarized, monochromatic
beam into its S and P polarization components. The extinction ratio
(TP/TS) exceeds 1000:1 in the transmitted beam. The two orthogonally
polarized beams emerge from the cube at 90° with respect to each other.
All entrance and exit surfaces are coated with a high efficiency, narrowband,
anti-reflection coating.
RMI STANDARD
SPECIFICATIONS
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Angle incidence:
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0º
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| Angle of Reflectance: |
90º |
| Material:
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BK7
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| Surface Figure:
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λ/10 at 633nm,
all
polished surfaces
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| Transmitted Wavefront: |
λ/4 at 633nm |
| Surface Quality: |
10 – 5, all polished surfaces |
| Dimensional Tolerance: |
± 0.010" |
| Angular Deviation: |
≤ 3 arc minutes |
| Bevels: |
0.010" – 0.030" at 45º |
| Clear Aperture:
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Central 85% of edge dimension
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Reflectance:
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RS > 99%
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Transmittance:
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TP > 95%
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| Extinction Ratio:
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TP/TS > 1000:1
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| Anti-Reflection Coating:
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R < 0.25% per surface,
all entrance and exit
surfaces |
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Last Updated ( Friday, 27 April 2007 )
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