Plate Beamsplitters are designed to separate incident light into two dispersed components commonly used in laser, fluorescence imaging, life science, spectroscopy, forensics and various broadband Infrared (IR) applications. It consists of a thin glass substrate and an anti-reflection coating is usually applied to the rearmost surface. There is a transmitted portion of the light that strikes the plate beamsplitter while another portion is reflected when positioned at a 45° angle of incidence.
To disperse the input beam into two orthogonal components, use non-polarizing beamsplitters. There are an equal transmission and refection of P-polarized and S-polarized states. It has more advantages over non-polarizing cube beamsplitters with its zero absorption. There is an anti-reflection back surface coating to eliminate ghosting or secondary images. This is best for internal fringes elimination because of its sight wedge design and convenient mounting in average optical mirror stands.
Non-polarizing plate beamsplitters come in different types such as UV Fused Silica (250 to 1700nm), Calcium Flouride (1 to 8µm), IR Fused Silica (900 to 2600 nm) and Zinc Selenide (1 to 14 µm). It covers range from the Ultraviolet to Midrange wavelength.