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Laser - Wikipedia 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 stimulated emission of electromagnetic radiation The word laser originated as an acronym for light amplification by stimulated emission of radiation [1][2] The first laser was built in 1960 by Theodore Maiman at
Laser | Definition, Acronym, Principle, Applications, Types | Britannica 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 covers an extremely limited range of visible, infrared, or ultraviolet wavelengths
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
Frequently Asked Questions About Lasers | FDA Frequently Asked Questions about Lasers Home Radiation-Emitting Products Radiation-Emitting Products and Procedures Home, Business, and Entertainment Products Laser Products and Instruments
What Is a Laser? | NASA Space Place – NASA Science for Kids 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 a flash light Lasers produce a very narrow beam of light This type of light is useful for lots of technologies and instruments—even some that you might use at home! How does a laser work? Light travels in waves
How Lasers Work - HowStuffWorks Lasers are used in dental drills, eye surgery and even tattoo removal But what exactly is a laser? There are numerous types, but all lasers work basically the same way Learn how they generate such concentrated beams of light
What Is A Laser? | NIST An explanation of lasers and their uses from NIST's William D Phillips, who shared the 1997 Nobel Prize in Physics for his pioneering work in using lasers to cool atoms to temperatures near absolute zero Dr Phillips leads NIST's Laser Cooling and Trapping Group, which continues to make fundamental discoveries in atomic, molecular, and optical physics, and is active in science education and