What are Lasers?🤔

The word LASER is an acronym for Light Amplification by, Stimulated Emission of Radiation which describes the process, by which lasers generate visible

A laser is a device that creates and amplifies a narrow intense beam of coherent light.

The light produced by a laser has very different properties to that produced by other sources (such as the sunlight, bulbs and fluorescent or neon tubes).

Working of a Laser.
Credit.: Encyclopedia Britannica

Laser light is monochromatic (a single wavelength) and typically confined, to a narrow beam, which spread slightly with distance.

Thus, the energy carried by a laser beam is concentrated in a small area and can travel efficiently over large distances.

Lasers are widely used in industry for cutting and boring metals and other materials in medicine for surgery in communications, scientific research and holography.

They are an integral part of such familiar devices as barcode scanners used in supermarkets, scanners, laser printers, and compact disc players.