beamsplitter

A beamsplitter is an optical device that divides a beam of light into two separate parts, or paths. It typically uses a partially reflective surface, like a coated glass, so that some light passes through while the rest is reflected. This allows scientists and engineers to manipulate light for various applications, such as in interferometers or optical experiments. Beamsplitters are precise tools that control how light is split, combining or redirecting light beams without significantly altering their properties, making them essential in many areas of optics and photonics.