1. LASER LASER stands for Light Amplification by Stimulated Emission of Radiation. The working principle of a laser is based on induced or stimulated emission. 2. TYPES OF LASERS The various types of laser that have been developed so far, display a very wide range of physical and operating parameters. ● according to the physical state of the active material - solid state (Ruby Laser, Nd:YAG Laser, Fiber Lasers), liquid Laser (Dye Lasers), gas lasers (He-Ne Laser, CO2 Laser, Argon-Ion Laser), free-electron lasers. ● According to the wavelength of the emitted radiation - infrared lasers, visible lasers, UV and X-ray lasers.Output powers cover an even larger range of values. ● lAccording to the Output Mode - Continuous Wave (CW) Lasers ( these emit a steady, uninterrupted beam.Their power is measured in Watts. Examples: Laser pointers, fiber-optic...
