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Efficient light extraction from weakly-coupled dielectric buttes

  • US 9,196,763 B2
  • Filed: 10/30/2014
  • Issued: 11/24/2015
  • Est. Priority Date: 10/30/2013
  • Status: Active Grant
First Claim
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1. An optoelectronic device, comprising:

  • a substrate;

    at least one junction configured to provide an active region within the substrate;

    a metallic back contact;

    a collection of dielectric buttes disposed on a top surface of the substrate; and

    wherein the collection of dielectric buttes are spaced greater than approximately one and less than approximately three (1/e) decay lengths of an evanescent field that corresponds to waveguiding within a butte, over an operating wavelength range for the junction.

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