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ring microresonators illustration
    
  Appears In
      
      Do the Bump: NIST Scientists Perfect Miniaturized Technique to Generate Precise Wavelengths of Visible Laser Light
      
            The new NIST design incorporates tiny corrugations, or bumps, into the ring. Collectively, the bumps act like tiny mirrors, reflecting a particular wavelength of visible light so that it circulates in both directions around the ring. The wavelength of visible light is exactly twice the periodicity of the bumps, which means that designs faithfully produce the desired color.

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