Cube Beamsplitters – Polarizing

Polarizing beamsplitters comes with wide range of configuration such as cube, plate or lateral displacement. When two right angle prisms are cemented together, a polarizing cube beamsplitter is formed.  To split unpolarized light through polarization, one prism is coated with an all dielectric, polarization sensitive coating. It will reflect and transmit the unpolarized, monochromatic and incident beam into its S and P polarization components. There is minimum sensitivity to variation on the coating, unlike the plate beamsplitters. In general, cube beamsplitters allow the optical system to have a superior resolution by eliminating asymmetrical optical aberrations.

Cube beamsplitters are perfect for different applications that require simplified mounting or system integration and durability. It is mostly used in photonics instrumentation or semiconductor in transmitting P-polarized light while reflecting S-polarized light. These are available in different wavelength ranges and common laser wavelengths. The typical design is between 0° and 45° angle of incidence with separation of the beams at 90°.  Any split between transmission and reflection can be designed depending on the configuration.