En optisk källa som sänder ut fotoner i en sammanhållen stråle. "Light Amplification by Stimulated Emission of Radiation" (LASER) åstadkoms med hjälp av apparater som omformar ljus av olika våglängder till en enda intensiv och nästan icke-divergerande stråle av monokromatiskt ljus. Lasrar verkar inom frekvensområdena för infrarött, synligt, ultraviolett eller röntgenstrålning.
An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.
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Laser — Q-Switched Lasers — Laser, Q-Switched — Lasers, Q-Switched — Q Switched Lasers — Q-Switched Laser — Pulsed Lasers — Laser, Pulsed — Lasers, Pulsed — Pulsed Laser — Continuous Wave Lasers — Continuous Wave Laser — Laser, Continuous Wave — Lasers, Continuous Wave — Masers — Maser