The term LASER stands for

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The term LASER stands for

Light Amplification by Stimulated Emission of Radiation
Light Amplification by Spontaneous Emission of Radiation
Light Amplification by Stimulated Emission of Rays
Light Amplification by Stimulated Energy of Radiation
This question was previously asked in
UPSC CAPF – 2018
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The term LASER is an acronym for Light Amplification by Stimulated Emission of Radiation.
LASER is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The full form reflects the fundamental principle behind its operation.
The first working laser was demonstrated in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow, building on the principles established by Albert Einstein regarding stimulated emission.

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