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Beamsplitters are designed to separate a single beam of light into two beams that are normal to one another. The intensity of the separated beams depends upon the type of coating and the specific properties of the light.
Most beamsplitters use dielectric coatings that are wavelength and polarization sensitive; therefore it is highly recommended that one look carefully at the transmission curves to ensure that the beamsplitter will perform as needed.
Cube beamsplitters with hybrid (dielectric/metal) coatings are relatively insensitive to changes over a broad range of polarization and wavelength, and our laser-line coatings are polarization insensitive at their design wavelength.
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