
Laser - Wikipedia
A laser differs from other sources of light in that it emits light that is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling uses such as optical communication, [6] laser cutting, …
Laser | Definition, Acronym, Principle, Applications, & Types | Britannica
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 emission generally …
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Laser: o que é, tipos, propriedades, aplicações - Brasil Escola
O laser é uma tecnologia que emprega a Física Quântica e a Óptica para o seu funcionamento. Os tipos de laser são a gás, de estado sólido, líquidos (de corante) ou semicondutores (diodo).
How do lasers work? | Who invented the laser? - Explain that Stuff
Nov 28, 2024 · An easy-to-understand explanation of how lasers work, with a simple diagram showing what's inside a laser.
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What Are Lasers And How Do They Actually Work? - ScienceAlert
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, generating insanely brief …
What Is a Laser? | NASA Space Place – NASA Science for Kids
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 on a very …
4 Principais tipos de Laser e como eles funcionam
Oct 31, 2024 · Cada um desses 4 tipos de laser possui suas próprias características e aplicações, atendendo a uma ampla gama de necessidades em diversas áreas. Entender essas diferenças é …
Lasers: Understanding the Basics - Photonics
All light sources convert input energy into light. In the case of the laser, the input, or pump, energy can take many forms, the two most common being optical and electrical. For optical pumping, the energy …