A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

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Mar 24, 2024 · At its core, a laser utilizes atoms of a chosen gas, liquid, crystal or semiconductor that can be stimulated to release uniform packets of light called photons. The emitted particles …

Dec 4, 2025 · Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. The …

Jan 25, 2024 · Although both words may sound identical when spoken, only laser is the correct spelling in standard English. In this article, we will explore the origin and meaning of the word …

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Sep 25, 2025 · The letters in the word laser stand for L ight A mplification by S timulated E mission of R adiation. A laser is an unusual light source. It is quite different from a light bulb or …

Lasers produce coherent light through a process called stimulated emission. The laser contains a chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited to a …