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Conductive element with lateral oxidation barrier

  • US 7,215,692 B2
  • Filed: 03/26/2002
  • Issued: 05/08/2007
  • Est. Priority Date: 12/18/1995
  • Status: Expired due to Fees
First Claim
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1. A surface emitting laser having a light emitting surface, said laser comprising:

  • a substrate;

    a plurality of semiconductor layers formed on said substrate;

    one of said semiconductor layers comprising an active layer having an active region therein;

    a first reflector located on one side of said active layer and a second reflector located on the opposite side of said active layer, at least one of said reflectors allowing a partial transmission of light energy therethrough;

    one of said semiconductor layers being a current controlling layer, said current controlling layer being penetrated by a plurality of hollow cavities;

    an aperture region in said current controlling layer which controls current flowing through said active region, said aperture region being defined by a conductive region in said current controlling layer bordered by non-conductive regions in said current controlling layer, and wherein one of said non-conductive regions surrounds one of said plurality of hollow cavities; and

    first and second electrodes located on said laser device to enable biasing of said active region.

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