Operating Principle of Laser

Lasers are devices that produce the intense beams of light which are monochromatic, coherent, and extremely collimated. The wavelength (colour) of laser light is extremely pure (monochromatic) when compared to other sources of light, and all of the photons (energy) that make up the laser beam have a fixed phase connection (coherence) with respect to one alternative. Light from a laser typically has very low in deviation. Where it can travel over great distances or can be focused on a very small spot with a brightness which exceeds that of the sun. Because of these  properties, lasers are used in a wide variety of applications in all paces of life.

  • Fiber lasers
  • Photonic crystal lasers
  • Semiconductor lasers
  • Dye lasers
  • Free-electron lasers
  • Exotic media

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