The acronym LASER stands for “Light Amplification by Stimulated Emission of Radiation.”
This term is used to describe a device that emits light through a process known as stimulated emission, where an external energy source stimulates atoms or molecules to release photons. The light produced in a laser is highly coherent, meaning that it has a consistent phase and direction, which is what makes lasers so powerful and useful in a variety of applications ranging from medical procedures to barcode scanners.
In essence, the term captures the core mechanism behind laser technology and highlights the importance of light amplification in generating the focused beams that lasers are known for.