photonic crystal

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photonic crystal

[fə‚tän·ik ′krist·əl]
(optics)
A macroscopic, periodic dielectric structure that possesses spectral gaps (stop bands) for electromagnetic waves, in analogy with the energy bands and gaps in regular semiconductors. Also known as photonic band-gap material.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

photonic crystal

A nanostructured array of holes used as an optical semiconductor. Just as electronic bandgaps prevent electrons from passing through, photonic crystals create photonic bandgaps that confine light. This technology increases the efficiency in optical fibers and allow microscopic lasers to be built. It is also expected to be used in the construction of photonic circuits that can stand-alone or be integrated into semiconductor circuits. See bandgap.
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References in periodicals archive ?
Lu, "Photonic crystals: a unique partnership between light and matter," European Journal of Physics, vol.
In 1987, Yablonovitch and John put forward the new concept of "photonic crystals" which expounds upon the effect that periodic dielectric structures have on the way that light propagates through certain crystalline materials.
Improved superlensing in two dimensional photonic crystals with a basis, Appl.
Deych, "Optical properties of one-dimensional photonic crystals based on multiple-quantum-well structures," Physical Review B, vol.
The new interface utilizes a well-studied structure known as a photonic crystal to guide and trap light.
The purpose of introducing grating into an elastic cavity is to integrate a wavelength-selective structure that is responsible for tuning the color of photonic crystals under strain upon interaction with light [24].
Photonic crystal waveguide (PCW) application with slow light properties have been widely discussed [16-26] in the recent years.
Wen, "Omnidirectional gaps of one-dimensional photonic crystals containing indefinite metamaterials," Journal of the Optical Society of America B, vol.
Braun, "Transfer of preformed three, dimensional photonic crystals onto dye, sensitized solar cells," Angewandte Chemie, vol.
Previously, the light emission spectrum of WLEDs has been modified using 3D polystyrene (PS) colloidal photonic crystals (CPhCs) to resemble w-WLEDs and candlelight [7-9]; however, the PS material has a glass transition temperature ([T.sub.g]) of approximately 90[degrees]C, causing the WLEDs with composite PS CPhC to be unreliable in high temperature environments.
Physicist Chia Wei Hsu and colleagues at MIT weren't looking to invent a mirror when they started studying photonic crystals, slabs of material drilled with holes small enough to manipulate individual light waves.

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