लेजर, ऑप्टिक्स और फोटोनिक्स जर्नल

Lasers are now a common technology in today's world. From laser pointers to revolutionizing laser surgery, lasers are utilized in a wide range of fields, including communications, manufacturing, medicine, and laser surgery. This article will discuss lasers' history, principles, and potential future developments. Lasers are devices that project a coherent, single-colored beam of light. This is done with a method called stimulated emission. Stimulated emission occurs when a photon of certain energy interacts with an excited atom or molecule. The interaction causes the excited atom or molecule to release a second photon with the same energy, phase, and direction as the first one.