Polarizing beam splitter cube can provide more than 90% transmission of P polarized light and more than 99% reflectivity of S polarized light in the whole wavelength range of your design. This cube beam splitter is composed of two prisms, which’s hypotenuse plane is plated with polarizing spectroscopic film, and the antireflective coating is plated on the end plane. Then, two prisms are glued with photosensitive glue.