Beamsplitter Cubes

Beamsplitter Cubes (from the Homogeneous Beamsplitters section) are optical components made by joining two right-angle prisms with an internal beamsplitting coating. They split an incoming collimated light beam into transmitted and reflected beams with minimal beam offset or ghosting — a key advantage over flat beamsplitter plates. Depending on design, cubes can separate light by wavelength (dichroic), polarization (polarizing), or intensity ratio, and are commonly used in laser systems, imaging and diagnostic instruments where compact, stable beam splitting is needed.