Plate-shaped beamsplitters are dielectric multilayer coatings on a parallel plate or wedge-shaped substrate. Reflectance : Transmittance: 1:3
A variable beam splitter can be used to change the angle of incidence of a laser.
Harmonic separators are used to separate certain YAG harmonics from other harmonics.

OSE-BS4

A beam sampler behaves like a plate beam splitter, it has the ability to reflect approximately 5.2% of the total beam.
The Polka Dot beam splitter has an aluminum coating of grid dots (polka dots) on the glass substrate.