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- Frequently Asked Questions About Lasers | FDA
Lasers are used for a variety of purposes including pointing out objects during a presentation, aligning materials at construction sites and in the home, and by doctors for cosmetic and surgical
- Laser - Wikipedia
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation The word laser originated as an acronym for light amplification by stimulated emission of radiation
- What Are Lasers And How Do They Actually Work? - ScienceAlert
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 up light rays in just about any part of the electromagnetic spectrum, with the exception of gamma waves
- How Does a Laser Work? | Laser Basics, Physics, Diagram, Principle . . .
A laser works by stimulating atoms or molecules to emit light at specific wavelengths and amplifying that light to produce a narrow beam of radiation This process of stimulated emission works by imparting energy to atoms or molecules These particles do not stay in these higher-energy, or excited, states for long as these states are naturally unstable Dropping back to a base energy state
- Lasers: Understanding the Basics - Photonics
Although lasers range from quantum-dot to football-field size and utilize materials from free electrons to solids, the underlying operating principles are always the same This article provides the basic information about how and why lasers work Over 60 years have passed since the first demonstration of a laser in 1960
- NIFs Guide to How Lasers Work
A laser takes advantage of the quantum properties of atoms that absorb and radiate particles of light called photons When electrons in atoms return to their normal orbit—or “ground” state—either spontaneously or when “stimulated” with a light or other energy source, even another laser in some cases, they emit more photons
- How Lasers Work - HowStuffWorks
A laser is a device that controls the way that energized atoms release photons "Laser" is an acronym for light amplification by stimulated emission of radiation, which describes very succinctly how a laser works Although there are many types of lasers, all have certain essential features
- How do lasers work? - Live Science
Lasers work by making energetic particles vibrate, or "oscillate," in sync, meaning the peaks and troughs of light waves they emit all line up Think of an army marching in formation
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