Laser A telescope in the Very Large Telescope system producing four orange laser guide stars A laser is a device that emits light through a process of optical amplification based on the …

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 …

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 …

Nov 28, 2024 · An easy-to-understand explanation of how lasers work, with a simple diagram showing what's inside a laser.

The most powerful laser designed to date can be found at the European Extreme Light Infrastructure facility in Romania. Its lasers are some of the most intense in the world, …

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 …

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5 days ago · A quality laser printer delivers unparalleled speed, pristine text, and reliable paper handling. Find the right option for your home or office from our list of tested picks.

Lasers can be used for a variety of applications. Learn how lasers work, different elements, and the differences between laser types at Edmund Optics.

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