The term 'EMIT COHERANT LIGHT' can be summarized as the process of using a laser to produce a beam of light. A laser is an acronym for Light Amplification by Stimulated Emission of Radiation, and it is a device that emits a highly focused beam of light. The light produced by a laser is coherent, meaning that all of the waves are in phase with each other, allowing the beam to travel further and remain focused. This process is often used in various applications such as medical treatments, communications, and manufacturing.