Photonic crystal diffraction pattern. This inter- ference pattern was formed by passing orange laser light through a photonic crystal. The symmetrical

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Photonic crystal diffraction pattern. This inter- ference pattern was formed by passing orange laser light through a photonic crystal. The symmetrical light and dark bands indicate a regular crystal structure. Three dark Kossel lines are seen around the bright central area, which are characteristic of the interference pattern of a three-dimensional structure. The structure of a photonic crystal prevents specific frequencies of light from propagating in it. In such a crystal, light can be guided in very small spaces with no loss of information. Photonic crystals may find uses in optical computers.

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Photo credit: © ANDREW TURBERFIELD/NATURE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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Keywords: analysis, band, computers, computing, crystal, diffraction, film, gap, helium-neon, hene, interference, kossel, laser, light, lines, optical, optics, pattern, photonic, photonics, physics, polymeric, structure, technological, technology, wave, waves