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Polarizing Cube Beamsplitter

Polarizing cube beamsplitters split randomly polarized beams into two orthogonal, linearly polarized components: S-polarized light is reflected at a 90 deg angle while P-polarized light is transmitted. Each beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of the prisms. A multi-layer antireflective coating has been applied to each face of the beamsplitter in order to produce maximum transmission efficiency.

Capability

Material:

BK7, grade A fine annealed

Design wavelength:

Clear aperture:

90%

Dimension tolerance:

+/-0.1mm

Angle tolerance:

+/- 3 arc minutes

Surface quality:

60-40

Surface accuracy:

lambda/4

AR coating:

R < 0.25% per surface @ 632.8nm

Transmission:

Tp > 95% @ 632.8nm

Reflection:

Rs > 99.5% @ 632.8nm

Extinction Ratio:

Tp / Ts > 100: 1 @ 632.80nm

Bevel:



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