Patents by Inventor Igal Brener

Igal Brener has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11017186
    Abstract: Dielectric resonators provide a building block for the development of low-loss resonant metamaterials because they replace lossy ohmic currents of metallic resonators with low-loss displacement currents. The spectral locations of electric and magnetic dipole resonances of a dielectric resonator can be tuned by varying the resonator geometry so that desired scattering properties are achieved.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 25, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Salvatore Campione, Michael B. Sinclair, Igal Brener, D. Bruce Burckel, Aaron J. Pung, Michael D. Goldflam
  • Publication number: 20200249451
    Abstract: Dielectric resonators provide a building block for the development of low-loss resonant metamaterials because they replace lossy ohmic currents of metallic resonators with low-loss displacement currents. The spectral locations of electric and magnetic dipole resonances of a dielectric resonator can be tuned by varying the resonator geometry so that desired scattering properties are achieved.
    Type: Application
    Filed: March 29, 2019
    Publication date: August 6, 2020
    Inventors: Salvatore Campione, Michael B. Sinclair, Igal Brener, D. Bruce Burckel, Aaron J. Pung, Michael D. Goldflam
  • Patent number: 10393933
    Abstract: Tunable filters can use Fano metasurface designs having extremely narrow transmission bands. The Fano metasurface can comprise dielectric or semiconductor materials and can produce transmission bands with quality factors well in excess of 1000—at least a factor of 50 greater than typical metamaterial-based infrared resonances. Numerical simulations of these metasurfaces show that the spectral position of the passband can be changed by slightly changing the position of a small dielectric perturbation block placed within the near-field of the resonator by using simple electromechanical actuation architectures that allow for such motion. An array of independently tunable narrowband infrared filters can thereby be fabricated that only requires deep-subwavelength motions of perturbing objects in the resonator's near-field.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 27, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Michael B. Sinclair, Salvatore Campione, David Bruce Burckel, Igal Brener, Paul J. Resnick
  • Patent number: 10361250
    Abstract: An array of dielectric resonators is formed on a substrate. Each resonator includes an active medium having an optical transition that is operative in a process of photodetection or photoemission. The active media each include a quantum well multilayer. The dielectric resonators in the array are each dimensioned to provide a resonance that lies substantially at the frequency of the optical transition.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: July 23, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Sheng Liu, Igal Brener, Michael B. Sinclair
  • Publication number: 20190051770
    Abstract: An array of dielectric resonators is formed on a substrate. Each resonator includes an active medium having an optical transition that is operative in a process of photodetection or photoemission. The active media each include a quantum well multilayer. The dielectric resonators in the array are each dimensioned to provide a resonance that lies substantially at the frequency of the optical transition.
    Type: Application
    Filed: October 10, 2018
    Publication date: February 14, 2019
    Inventors: Sheng Liu, Igal Brener, Michael B. Sinclair
  • Patent number: 10128387
    Abstract: An array of dielectric resonators is formed on the substrate of an optoelectronic device. Each resonator includes an active medium having an optical transition that is operative in a process of photodetection or photoemission. The dielectric resonators in the array are each dimensioned to provide a resonance that lies substantially at the frequency of the optical transition.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 13, 2018
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Sheng Liu, Igal Brener, Michael B. Sinclair
  • Patent number: 10054839
    Abstract: A method of nonlinear wavelength generation uses a nonlinear optical medium. An input flux of pump energy is applied to one or more dielectric optical resonators. Each resonator has an optical cavity comprising the nonlinear optical medium. Each resonator has at least one Mie resonance that is excited by the input flux of pump energy. The pump energy causes the generation of converted light containing at least one converted component having a frequency attainable only through a non-linear process.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 21, 2018
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Igal Brener, Sheng Liu, Michael B. Sinclair, Polina Vabishchevich
  • Publication number: 20170276848
    Abstract: Tunable filters can use Fano metasurface designs having extremely narrow transmission bands. The Fano metasurface can comprise dielectric or semiconductor materials and can produce transmission bands with quality factors well in excess of 1000—at least a factor of 50 greater than typical metamaterial-based infrared resonances. Numerical simulations of these metasurfaces show that the spectral position of the passband can be changed by slightly changing the position of a small dielectric perturbation block placed within the near-field of the resonator by using simple electromechanical actuation architectures that allow for such motion. An array of independently tunable narrowband infrared filters can thereby be fabricated that only requires deep-subwavelength motions of perturbing objects in the resonator's near-field.
    Type: Application
    Filed: June 15, 2017
    Publication date: September 28, 2017
    Inventors: Michael B. Sinclair, Salvatore Campione, David Bruce Berckel, Igal Brener, Paul J. Resnick
  • Patent number: 9720151
    Abstract: A structure for broadband light funneling comprises a two-dimensional periodic array of connected ultrasubwavelength apertures, each aperture comprising a large sub-aperture that aids in the coupling of the incoming incident light and a small sub-aperture that funnels a significant fraction of the incident light power. The structure possesses all the capabilities of prior extraordinary optical transmission platforms, yet operates nonresonantly on a distinctly different mechanism. The structure demonstrates efficient ultrabroadband funneling of optical power confined in an area as small as ˜(?/500)2, where optical fields are enhanced, thus exhibiting functional possibilities beyond resonant platforms.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: August 1, 2017
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, University of Exeter
    Inventors: Ganapathi Subramanian Subramania, Igal Brener, Stavroula Foteinopoulou
  • Patent number: 9705311
    Abstract: A mid-infrared tunable metamaterial comprises an array of resonators on a semiconductor substrate having a large dependence of dielectric function on carrier concentration and a semiconductor plasma resonance that lies below the operating range, such as indium antimonide. Voltage biasing of the substrate generates a resonance shift in the metamaterial response that is tunable over a broad operating range. The mid-infrared tunable metamaterials have the potential to become the building blocks of chip based active optical devices in mid-infrared ranges, which can be used for many applications, such as thermal imaging, remote sensing, and environmental monitoring.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: July 11, 2017
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Igal Brener, Xiaoyu Miao, Eric A. Shaner, Brandon Scott Passmore
  • Patent number: 9685765
    Abstract: A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to radio frequencies and can be easily implemented in dielectric materials. The resulting high-quality-factor Fano metasurface can be used in many sensing, spectral filtering, and modulation applications.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 20, 2017
    Assignee: Sandia Corporation
    Inventors: Michael B. Sinclair, Larry K. Warne, Lorena I. Basilio, William L. Langston, Salvatore Campione, Igal Brener, Sheng Liu
  • Patent number: 9594266
    Abstract: A photonic apparatus includes a metamaterial resonator array overlying and electromagnetically coupled to a vertically stacked plurality of quantum wells defined in a semiconductor body. An arrangement of electrical contact layers is provided for facilitating the application of a bias voltage across the quantum well stack. Those portions of the semiconductor body that lie between the electrical contact layers are conformed to provide an electrically conductive path between the contact layers and through the quantum well stack.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 14, 2017
    Assignee: Sandia Corporation
    Inventors: Igal Brener, Michael Wanke, Alexander Benz
  • Publication number: 20170063039
    Abstract: A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to radio frequencies and can be easily implemented in dielectric materials. The resulting high-quality-factor Fano metasurface can be used in many sensing, spectral filtering, and modulation applications.
    Type: Application
    Filed: August 3, 2016
    Publication date: March 2, 2017
    Inventors: Michael B. Sinclair, Larry K. Warne, Lorena I. Basilio, William L. Langston, Salvatore Campione, Igal Brener, Sheng Liu
  • Publication number: 20160341859
    Abstract: An optical device for generating narrow-band circularly and elliptically polarized radiation, either by conversion from externally incident light or through thermal emission of heated objects. The optical device includes a metasurface comprised of unit cells, where each unit cell contains structural elements or features that break two mirror inversion symmetries of the unit cell and couple bright and dark resonances. In this manner, the optical device emits circularly polarized radiation that does not exhibit a preference for right-hand circularly polarized light or left-hand circularly polarized light incident upon it. As a result, multiple of such optical devices with different unit cell sizes, geometries and dimensions of the intra-cell elements may be implemented as a tag that thermally emits different states of circularly polarized radiation confined to multiple spectrally-narrow bands.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 24, 2016
    Inventors: Gennady Shvets, Chih-Hui Wu, Igal Brener
  • Patent number: 9190542
    Abstract: The efficiency of a photovoltaic cell is enhanced by light trapping using Mie-scattering nanostructures. In one embodiment, an array of nanocylinders is formed on the front surface of a silicon film to enhance forward scattering into the film, and an array of nanocylinders is formed on the back surface to enhance backscattering so that more light is absorbed within the silicon film. In an alternate embodiment, a mirror layer is formed on the back surface of the silicon film to reflect light within the film back toward the front-surface nanocylinder array.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: November 17, 2015
    Assignee: Sandia Corporation
    Inventors: Igal Brener, Nche Tumasang Fofang, Ting S. Luk
  • Patent number: 9086510
    Abstract: A wavelength-tunable, depletion-type infrared metamaterial optical device is provided. The device includes a thin, highly doped epilayer whose electrical permittivity can become negative at some infrared wavelengths. This highly-doped buried layer optically couples with a metamaterial layer. Changes in the transmission spectrum of the device can be induced via the electrical control of this optical coupling. An embodiment includes a contact layer of semiconductor material that is sufficiently doped for operation as a contact layer and that is effectively transparent to an operating range of infrared wavelengths, a thin, highly doped buried layer of epitaxially grown semiconductor material that overlies the contact layer, and a metallized layer overlying the buried layer and patterned as a resonant metamaterial.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 21, 2015
    Assignee: Sandia Corporation
    Inventors: Igal Brener, Young Chul Jun
  • Patent number: 9020005
    Abstract: A multicolor photonic crystal laser array comprises pixels of monolithically grown gain sections each with a different emission center wavelength. As an example, two-dimensional surface-emitting photonic crystal lasers comprising broad gain-bandwidth III-nitride multiple quantum well axial heterostructures were fabricated using a novel top-down nanowire fabrication method. Single-mode lasing was obtained in the blue-violet spectral region with 60 nm of tuning (or 16% of the nominal center wavelength) that was determined purely by the photonic crystal geometry. This approach can be extended to cover the entire visible spectrum.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: April 28, 2015
    Assignee: Sandia Corporation
    Inventors: Jeremy B. Wright, Igal Brener, Ganapathi S. Subramania, George T. Wang, Qiming Li
  • Patent number: 9018642
    Abstract: A mid-infrared tunable metamaterial comprises an array of resonators on a semiconductor substrate having a large dependence of dielectric function on carrier concentration and a semiconductor plasma resonance that lies below the operating range, such as indium antimonide. Voltage biasing of the substrate generates a resonance shift in the metamaterial response that is tunable over a broad operating range. The mid-infrared tunable metamaterials have the potential to become the building blocks of chip based active optical devices in mid-infrared ranges, which can be used for many applications, such as thermal imaging, remote sensing, and environmental monitoring.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: April 28, 2015
    Assignee: Sandia Corporation
    Inventors: Igal Brener, Xiaoyu Miao, Eric A. Shaner, Brandon Scott Passmore, Young Chul Jun
  • Patent number: 8803637
    Abstract: Terahertz metamaterials comprise a periodic array of resonator elements disposed on a dielectric substrate or thin membrane, wherein the resonator elements have a structure that provides a tunable magnetic permeability or a tunable electric permittivity for incident electromagnetic radiation at a frequency greater than about 100 GHz and the periodic array has a lattice constant that is smaller than the wavelength of the incident electromagnetic radiation. Microfabricated metamaterials exhibit lower losses and can be assembled into three-dimensional structures that enable full coupling of incident electromagnetic terahertz radiation in two or three orthogonal directions. Furthermore, polarization sensitive and insensitive metamaterials at terahertz frequencies can enable new devices and applications.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 12, 2014
    Assignee: Sandia Corporation
    Inventors: Xomalin Guaiuli Peralta, Igal Brener, John O'Hara, Abul Azad, Evgenya Smirnova, John D. Williams, Richard D. Averitt
  • Publication number: 20140219306
    Abstract: A multicolor photonic crystal laser array comprises pixels of monolithically grown gain sections each with a different emission centre wavelength. As an example, two-dimensional surface-emitting photonic crystal lasers comprising broad gain-bandwidth III-nitride multiple quantum well axial heterostructures were fabricated using a novel top-down nanowire fabrication method. Single-mode lasing was obtained in the blue-violet spectral region with 60 nm of tuning (or 16% of the nominal centre wavelength) that was determined purely by the photonic crystal geometry. This approach can be extended to cover the entire visible spectrum.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 7, 2014
    Applicant: Sandia Corporation
    Inventors: Jeremy B. Wright, Igal Brener, Ganapathi S. Subramania, George T. Wang, Qiming Li