Patents by Inventor Boubacar Kante

Boubacar Kante 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: 11569631
    Abstract: A laser source includes a topological cavity for nonreciprocal lasing, a magnetic material and an optical waveguide. The magnetic material is arranged to interact with the topological cavity. The optical waveguide is arranged to receive light extracted from the topological cavity upon breaking of time-reversal symmetry in the topological cavity.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: January 31, 2023
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Babak Bahari
  • Publication number: 20230014285
    Abstract: An octave bandwidth, achromatic metalens configured to operate in light wavelengths having a range of approximately 640 nm to 1200 nm.
    Type: Application
    Filed: November 23, 2020
    Publication date: January 19, 2023
    Inventors: Boubacar Kante, Abdoulaye Ndao, Li-Yi Hsu, Jeongho Ha
  • Publication number: 20220173574
    Abstract: An optical integrated light source includes a plurality of topological ring resonators. Each of the topological ring resonators is defined by an interface between two distinct periodic structures having different topological invariants such that a one-way edge mode may be excited along the interface. A magnetic material is arranged to interact with the plurality of topological ring resonators such that the optical integrated light source is structured and configured to generate plural beams each carrying large orbital angular momentum.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 2, 2022
    Inventors: Boubacar KANTE, Babak BAHARI
  • Publication number: 20220170924
    Abstract: A method for detecting an analyte includes providing a sensor that includes a plurality of coupled polaritonic structures having polaritonic resonances. A surface of at least one of the polaritonic structure in the sensor is functionalized by providing a receptor for binding the analyte to the surface. The sensor is operated at an exceptional point (EP). The presence of the analyte on the surface is identified when a degeneracy of resonant frequencies and linewidths is lifted and a splitting of the resonant frequencies and linewidths occurs.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 2, 2022
    Inventors: Abdoulaye NDAO, Jun-Hee PARK, Boubacar KANTE
  • Patent number: 11296484
    Abstract: A bound states in the continuum (BIC) surface emitting laser includes a light emitter configured to generate BIC light waves. The laser also includes an array of holes with equal radii extending through the light emitter such that light emitted by the light emitter upon receipt of power is emitted as a coherent vortex beam at an angle to a surface normal of the light emitter that is determined at least in part by the radius of the holes in the array.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 5, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Babak Bahari
  • Patent number: 11152768
    Abstract: Systems and methods according to present principles provide, at room temperature, a bound state in the continuum laser that harnesses optical modes residing in the radiation continuum but nonetheless may possess arbitrarily high quality factors. These counterintuitive cavities are based on resonantly trapped symmetry-compatible modes that destructively interfere. Such systems and methods may be applied towards coherent sources with intriguing topological properties for optical trapping, biological imaging, and quantum communication.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 19, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Yeshaiahu Fainman, Thomas Lepetit, Ashok Kodigala, Qing Gu
  • Patent number: 10942376
    Abstract: Systems and methods according to present principles provide ways to construct and use tunable exceptional point (EP) singularities in three-dimensional plasmonic nanostructures. Such structures have applications in sensing, communication, imaging, and other fields where, e.g., determining sub wavelength features of interest is of value.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 9, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Ashok Kodigala, Thomas Lepetit, Junhee Park
  • Patent number: 10871352
    Abstract: Provided are systems and methods for cloaking an object on a ground plane. A thin dielectric metasurface is used to reshape the wavefronts distorted by the object in order to mimic the reflection pattern of a flat ground plane. To achieve such “carpet cloaking”, the reflection angle is made equal to the incident angle everywhere on the object by providing a graded metasurface with a designed phase gradient. This provides additional phase to the wavefronts to compensate for the phase difference amongst lightpaths induced by the geometrical distortion. One exemplary metasurface is described which is designed for the microwave range using highly sub-wavelength dielectric resonators. The approach can be applied to hide any scatterer under a metasurface of class C1 (first derivative continuous) on a groundplane not only in the microwave regime, but also at other frequencies, including higher frequencies, up to the visible.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: December 22, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Boubacar Kante, Li-Yi Hsu
  • Publication number: 20200203926
    Abstract: A bound states in the continuum (BIC) surface emitting laser includes a light emitter configured to generate BIC light waves. The laser also includes an array of holes with equal radii extending through the light emitter such that light emitted by the light emitter upon receipt of power is emitted as a coherent vortex beam at an angle to a surface normal of the light emitter that is determined at least in part by the radius of the holes in the array.
    Type: Application
    Filed: May 16, 2018
    Publication date: June 25, 2020
    Inventors: Boubacar KANTE, Babak BAHARI
  • Publication number: 20200176943
    Abstract: A laser source includes a topological cavity for nonreciprocal lasing, a magnetic material and an optical waveguide. The magnetic material is arranged to interact with the topological cavity. The optical waveguide is arranged to receive light extracted from the topological cavity upon breaking of time-reversal symmetry in the topological cavity.
    Type: Application
    Filed: July 24, 2018
    Publication date: June 4, 2020
    Inventors: Boubacar KANTE, Babak BAHARI
  • Publication number: 20190219845
    Abstract: Systems and methods according to present principles provide ways to construct and use tunable exceptional point (EP) singularities in three-dimensional plasmonic nanostructures. Such structures have applications in sensing, communication, imaging, and other fields where, e.g., determining sub wavelength features of interest is of value.
    Type: Application
    Filed: September 7, 2017
    Publication date: July 18, 2019
    Inventors: Boubacar Kante, Ashok Kodigala, Thomas Lepetit, Junhee Park
  • Publication number: 20190170484
    Abstract: Provided are systems and methods for cloaking an object on a ground plane. A thin dielectric metasurface is used to reshape the wavefronts distorted by the object in order to mimic the reflection pattern of a flat ground plane. To achieve such “carpet cloaking”, the reflection angle is made equal to the incident angle everywhere on the object by providing a graded metasurface with a designed phase gradient. This provides additional phase to the wavefronts to compensate for the phase difference amongst lightpaths induced by the geometrical distortion. One exemplary metasurface is described which is designed for the microwave range using highly sub-wavelength dielectric resonators. The approach can be applied to hide any scatterer under a metasurface of class C1 (first derivative continuous) on a groundplane not only in the microwave regime, but also at other frequencies, including higher frequencies, up to the visible.
    Type: Application
    Filed: October 31, 2016
    Publication date: June 6, 2019
    Inventors: BOUBACAR KANTE, LI-YI HSU
  • Publication number: 20180287348
    Abstract: Systems and methods according to present principles provide, at room temperature, a bound state in the continuum laser that harnesses optical modes residing in the radiation continuum but nonetheless may possess arbitrarily high quality factors. These counterintuitive cavities are based on resonantly trapped symmetry-compatible modes that destructively interfere. Such systems and methods may be applied towards coherent sources with intriguing topological properties for optical trapping, biological imaging, and quantum communication.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 4, 2018
    Inventors: Boubacar Kante, Yeshaiahu Fainman, Thomas Lepetit, Ashok Kodigala, Qing Gu