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Multilayer Photonic Structures

  • US 20100208338A1
  • Filed: 01/13/2010
  • Published: 08/19/2010
  • Est. Priority Date: 02/19/2009
  • Status: Active Grant
First Claim
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1. A multilayer photonic structure comprising a plurality of coating layers of high index dielectric material having an index of refraction nH and a plurality of coating layers of low index dielectric material having an index of refraction nL, wherein:

  • the plurality of coating layers of high index dielectric material and the plurality of coating layers of low index dielectric material are alternately arranged and a first coating layer and a last coating layer of the multilayer photonic structure comprise low index material;

    an index-thickness of each coating layer of low index dielectric material is different than an index-thickness of other coating layers of low index dielectric material;

    an index-thickness of each coating layer of high index dielectric material is different than an index-thickness of other coating layers of high index dielectric material;

    the index-thicknesses of the plurality of coating layers of low index dielectric material are different than the index-thicknesses of the plurality of coating layers of high index dielectric material; and

    the multilayer photonic structure has a first high reflectivity bandwidth, a second high reflectivity bandwidth and a low reflectivity bandwidth for electromagnetic radiation incident on a surface of the multilayer photonic structure from 0 degrees to 45 degrees, wherein the low reflectivity bandwidth is positioned between the first high reflectivity bandwidth and the second high reflectivity bandwidth.

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