A beam splitter is a device or material that splits a single beam of light into two separate beams. It is like a mirror that divides light into two directions without absorbing or changing its intensity. Full definition
«Modern polarization imaging systems require cascading several optical components such as beam splitters, polarizers and wave plates,» said Ambrosio. (seas.harvard.edu)
In an analogous «before - before» experiment, Suarez's colleagues in Geneva deployed entangled photons A and B through beam splitters, after which each particle would follow either a short or a long path. (discovermagazine.com)
The artificial agent then tries to develop new experiments by virtually placing mirrors, prisms or beam splitters on the table. (sciencedaily.com)