• Question: How does the laser work? (complicated I know)

    Asked by johnp to Graham on 17 Jun 2014.
    • Photo: Graham Wiggins

      Graham Wiggins answered on 17 Jun 2014:

      Quick guide to lasers,
      basically, you amplify ( make bigger ) a pulse of light by adding energy to it.
      longer answer
      The light is usally a fixed frequency ( or wavelegnth, or colour ) that passes out of a laser cavity that makes the first beam. We then send the into amplifiers, which bounce the beam back + forth inside the amplifier until it is strong enough to get through the special mirror on the “out” end of the amplifier
      If you go to youtube via this link http://www.youtube.com/watch?v=48WkYbkhJO4
      there’s a great video to explain it

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