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Free research essays on topics related to: stimulated emission

8 results found, view free essays on page:

  • Solid State Lasers Back And Forth
    2,014 words
    Laser is an acronym for light amplification by stimulated emission of radiation. In the last century many types of lasers have been used for many different applications from welding to surgery to military and even many uses in every day life by harnessing the principles of light and stimulated emission. To understand how lasers work we must first understand the physics behind light waves. Light is emitted from a source and travels in straight lines and when it strikes an object is either absorbe...
    Free research essays on topics related to: stimulated emission, compact disk, back and forth, solid state lasers, laser light
  • Amount Of Energy Stimulated Emission
    1,113 words
    There are only about 100 different kinds of atoms in the entire universe. Everything we see is made up of these 100 atoms in an unlimited number of combinations. They continuously vibrate, move and rotate. Even the atoms that make up the chairs that we sit in are moving around in class. Atoms can be in different states of excitation (Bertolotti 48) or they can have different energies. If we apply a lot of energy to an atom, it can leave what is called the ground-state energy level and go to an e...
    Free research essays on topics related to: stimulated emission, high speed, amount of energy, solid state, laser light
  • Solid State Lasers Beam Of Light
    1,749 words
    L A S E R S Did you know that some laser beams are small enough and powerful enough to drill two hundred holes on a spot as tiny as the head of a pin? The first major advancement in laser development came in 1954. This was the year that Charles H. Townes, an American physicist, created a device that amplified microwaves. This device was actually called a maser at first, which was short for Microwave Amplification by Stimulated Emission of Radiation Masers. It produced microwaves of just one freq...
    Free research essays on topics related to: amount of light, stimulated emission, solid state lasers, beam of light, electron beam
  • Stimulated Emission Positively Charged
    948 words
    Lasers HISTORY OF LASER PRODUCTION The roots of laser mechanism are very modern. In 1900 German physicist Max Planck presented an explanation of why the colors of a glowing hot body may change with temperature. He also proposed discrete quantum theory saying that radiations come in discrete quantities called quanta. Therefore radiations are not only a series of waves but a stream of particles called photons. By 1917, Einstein has outlined the principles underlying the production of laser radiati...
    Free research essays on topics related to: quantum theory, basic principles, stimulated emission, energy levels, positively charged
  • Back And Forth Stimulated Emission
    1,080 words
    The light from lasers differs from ordinary light in several important aspects. Ordinary light from a light bulb travels randomly in all directions (unless the bulb is equipped with an integral reflector that directs the light). The light is thus incoherent. Even when incoherent light is directed with a reflector, it still spreads rapidly. The light from a laser is temporary and spatially coherent. This means that all of the wave-fronts of light are lined up in time and space (see Diagrams). The...
    Free research essays on topics related to: stimulated emission, back and forth, electrical power, laser, laser beam
  • Solid State Lasers Beam Of Light
    1,373 words
    A laser (LAY zum) is a device that produces a very narrow beam of light. This is called coherent light. It is formed from producing light at equal wavelengths in phase. The result is a beam of light that does not stray from it? s path. Conventional light bulbs produce incoherent light. This form of light diffuses immediately upon radiation from its source. The size of a laser beam varies greatly. Some lasers produce beams that are small enough to fit 200 beams in an area the size of a pinhead. T...
    Free research essays on topics related to: stimulated emission, laser beam, solid state lasers, gas lasers, beam of light
  • Stimulated Emission Nobel Prize
    1,216 words
    The Wonderful World of Lasers Laser stands for Light Amplification by the Stimulated Emission of Radiation. Lasers work by producing an intense beam of bright light that travels in one direction. The laser has the unique ability to produce one specific color or wavelength of light, which can be varied in its intensity and pulse duration. The newest laser systems have become remarkably precise and selective, allowing treatment results and safety levels not previously available. All lasers contain...
    Free research essays on topics related to: nobel prize, laser light, enemy territory, stimulated emission, carbon dioxide
  • Solid State Lasers Funk And Wagnalls
    1,294 words
    people see Lasers When most people see a laser beam they are amazed by its unique physical properties. Laser light is so unique from other light because it is coherent; unlike ordinary light, which travels in all directions, laser light travels in a straight beam. The word laser is an acronym for Light Amplification by Stimulated Emission of Radiation. The history of the laser is very interesting. Lasers have changed immensely since they were first invented. Before the laser was invented, Charle...
    Free research essays on topics related to: stimulated emission, fiber optic, gas lasers, funk and wagnalls, solid state lasers

8 results found, view free essays on page:

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