The word LASER is an acronym for Light Amplification by Stimulated Emission of Radiation. Stimulated emission of radiation is a characteristic procedure initially distinguished by Einstein. It happens when a light emission goes through an extraordinarily arranged medium and starts or stimulates the atoms inside that medium to radiate light the very same way and precisely at an indistinguishable wavelength from that of the original beam. Lasers are devices that amplify or increment the force of light to deliver a highly directional, high-power beam that commonly has an extremely unadulterated frequency or wavelength. Lasers create powers running from Nano watts to a billion trillion watts (1021 W) for short blasts. They deliver wavelengths or frequencies going from the microwave locale and infrared to the obvious, ultraviolet, vacuum ultraviolet, and into the delicate X-beam otherworldly districts. Lasers are an essential segment of some of our most present day communication frameworks and are the tests that produce the sound signs from our minimal plate players. They are utilized for cutting, warm treating, cleaning, and evacuating materials in both the modern and medicinal universes. They are the focusing on component of laser-guided bombs and are the optical source in both market checkout scanners and devices (steppers) that print our microchips.