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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Lasers in engineering -- Congresses : Lasers based manufacturing : 5th International and 26th All India Manufacturing Technology, Design and Research Conference, AIMTDR 2014 / Shrikrishna N. Joshi, Uday Shanker Dixit, editors
Lasers in forestry. : Forestry applications of airborne laser scanning : concepts and case studies / Matti Maltamo, Erik Naesset, Jari Vauhkonen, editors