Beam propagation

Beam propagation refers to how light or other forms of waves travel through space or a medium. When a beam of light is emitted, it can spread out, change direction, or lose intensity as it moves. This behavior is influenced by factors like the medium's properties, the beam's shape, and obstacles in its path. Understanding beam propagation is crucial in fields like optics, telecommunications, and laser technology, as it helps in designing systems for clearer communication, better imaging, and more efficient energy transfer. It essentially describes the journey of light as it interacts with its environment.