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Light emitting devices featuring optical mode enhancement

  • US 10,559,630 B2
  • Filed: 12/21/2017
  • Issued: 02/11/2020
  • Est. Priority Date: 12/21/2017
  • Status: Expired due to Fees
First Claim
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1. A light emitting device, comprising:

  • a substrate supporting a first light emitting element and a second light emitting element, the first light emitting element being configured to emit, in a first principal direction, light in a first wavelength band and the second light emitting element being configured to emit, in the first principal direction, light in a second wavelength band different from the first wavelength band, each light emitting element comprising;

    a light emitting diode layer, extending in a plane perpendicular to the first principal direction, having a thickness of 10 microns or less in the first principal direction and a maximum lateral dimension of 100 microns or less orthogonal to the first principal direction, the light emitting diode layer comprising a semiconductor material; and

    one or more layers configured to enhance an optical mode of the light emitted in the corresponding first or second wavelength band perpendicular to the plane and/or suppress an optical mode of the light emitted in the corresponding first or second wavelength band in the plane,wherein, for at least one of the light emitting elements, the one or more layers comprise at least two layers positioned on opposite sides of the diode layer,and wherein the at least two layers form a resonant optical cavity configured to enhance the optical mode of the light emitted in the corresponding one of the first or second wavelength bands perpendicular to the plane and the two layers are reflective at the corresponding one of the first and second emitted wavelengths.

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