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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Dec 25, 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 …

Lasers are devices that concentrate beams of light by forcing their waveforms and frequencies to align. First developed in the 1960s to amplify microwaves, modern lasers technology can ramp …

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A laser is created when electrons in the atoms in optical materials like glass, crystal, or gas absorb the energy from an electrical current or a light. That extra energy “excites” the …

Laser emits light through a process called stimulated emission of radiation which amplifies or increases the intensity of light. Some lasers generate visible light but others generate …

Nov 28, 2024 · Lasers are amazing light beams powerful enough to zoom miles into the sky or cut through lumps of metal. Although they seem pretty recent inventions, they've actually been …

Sep 25, 2025 · Because laser light stays focused and does not spread out much (like a flashlight would), laser beams can travel very long distances. They can also concentrate a lot of energy …

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 …