Polarizing Beam Splitting Cubes (Cemented)
Materials: BK7, fused silica, SF2 or SF5 optical glass.
Consists of a pair of right angle prisms optically cemented with a dielectric
beam splitting coating applied on the hypotenuse face of one prism.
s-polarized light reflected at 90 deg.,
P-polarized light transmitted with minimal deviation.
Four entrance/exit faces AR coated.
Broadband versions: 450-650 nm, 650-900 nm, 1200-1500 nm, 1500-1610 nm
Dual-wavelength versions: 405/810 nm, 775/1550 nm
Common size: 12.7x12.7x12.7mm (0.5"x0.5"x0.5"). 25.4x25.4x25.4mm (1"x1"x1") available upon request.
Suitable for low power, low energy applications.
(Compare: High power PBS)
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PBS Specifications:
Wavefront Distortion: < λ/4 @ 632.8 nm
Dimensions Tolerance: +/- 0.2 mm
Beam Deviation: < 3 arc minutes
Extinction Ratio*: > 300:1 for single wavelength PBS; > 150:1 for dual wavelength PBS
Damage threshold: 0.1 GW/cm2 @1064 nm, 20 ns, 20 Hz
* The extinction ratio (ER) is the ratio of maximum to minimum transmission of a linearly polarized input. The transmission is at its maximum/minimum when the input is p-polarized/s-polarized.
Coatings:
Input and output faces: Broadband AR coating with R < 0.5%.
Polarization beamsplitting coating on the hypotenuse:
Transmittance of P-polarization: Tp > 92%,
Reflectance of S-polarization: Rs > 99%.
Beamsplitting coating for PBS0012-650-900nm:
Beamsplitting coating for Dual Wavelength PBS0012-405/810:
See here
Beamsplitting coating for Dual Wavelength PBS0012-775/1550:
See here
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