Beamsplitters are optical components used to split input light into two separate parts. a laser beam) into two (or sometimes more) beams, which may or may not have the same optical power (radiant flux). It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. Light. FOR SPLITTING INTO ONE OR MORE DEFINED PARTIAL BEAMS. This precise ability to split light by wavelength makes beam splitters essential in various fields, including laser systems, semiconductor. The Beam Splitter gives you a flexible option for using dual light sources or spectrometers.