The light in each laser beam is made up of just one very specific color or wavelength of light. Unlike normal light, the light in lasers is also coherent, meaning each ray of light within them moves in unison with the others. This allows light energy to become greatly concentrated in laser beams, making them powerful enough to drill or cut through surfaces.
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Normal lasers pump atoms with energy until they emit laser rays. However, the new lasers — which are based on particles that are part matter and light — could require two to 100 times less power than semiconductor lasers to give off laser beams.
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