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  • NIFs Guide to How Lasers Work
    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 electrons enough to move from a lower-energy orbit to a higher-energy orbit around the atom’s nucleus
  • How do lasers work? | Who invented the laser? - Explain that Stuff
    Like an LED, they make light when electrons and "holes" (effectively, "missing electrons") hop about and join together; like a laser, they generate coherent, monochromatic light
  • Laser - Wikipedia
    A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation
  • How Does a Laser Work? - Encyclopedia Britannica
    A laser uses a pair of mirrors facing each other—an optical resonator—to build up the light energy in the beam As light bounces back and forth between the mirrors, it passes through the laser material, increasing in intensity with each pass as more excited atoms emit additional photons
  • How Lasers Work - HowStuffWorks
    Once an electron moves to a higher-energy orbit, it eventually wants to return to the ground state When it does, it releases its energy as a photon — a particle of light You see atoms releasing energy as photons all the time
  • 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 source may be a lamp or, more commonly, another laser
  • 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
  • 8. 7: Lasers - Physics LibreTexts
    A laser is device that emits coherent and monochromatic light Laser light is produced by population inversion and subsequent de-excitation of electrons in a material (solid, liquid, or gas)
  • Basic principles of lasers - ScienceDirect
    To produce Laser light, we want all the photons produced to be the same, to travel in the same direction and be the same colour To achieve this, we first need to have stimulated emission, and then we need to tip the balance so that there is more stimulated emission than spontaneous emission
  • How do lasers work? - PhysicsExplained. org
    Lasers work by stimulating atoms to emit light in phase, creating coherent light where all waves are synchronized A laser uses an active medium (like a crystal or gas), energy source to excite atoms, and mirrors to amplify and direct the light into a focused beam





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