Concept information
PREFERRED TERM
LASERS
DEFINITION
- LASERS (Light Amplification by Stimulated Emission of Radiation): Any of several devices that emit highly amplified and coherent radiation of one or more discrete frequencies. One of the most common lasers makes use of atoms in a metastable energy state that, as they decay to a lower energy level, stimulate others to decay, resulting in a cascade of emitted radiation. [Source: The American Heritage® Dictionary of the English Language, Fourth Edition]
BROADER CONCEPT
URI
https://gcmd.earthdata.nasa.gov/kms/concept/4d9f3a1b-9601-4b32-9a35-ae26981b1ee9
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