Patents by Inventor Mark L. Brongersma

Mark L. Brongersma 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: 10890772
    Abstract: Waveguide enhanced resonant diffraction is provided in grating structures having negligible non-resonant diffraction by the grating. This is done by making the grating thickness much less than any relevant wavelength, and by having the grating in proximity to a waveguide for diffractive coupling to and from a mode of the waveguide. Material absorption in the grating material can be used to suppress undesired diffraction orders. The resulting structures can provide rainbow-free diffractive optical sampling.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: January 12, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jung-Hwan Song, Mark L. Brongersma
  • Patent number: 10877200
    Abstract: A beam steering method and device are provided. The beam steering method includes outputting, from a hologram recording medium on which a plurality of signal light beams having different steering information are recorded, signal light beam having specific steering information, by making reference light having a specific characteristic incident on the hologram recording medium. The method further includes o obtaining information about an object existing in the external environment based on the output signal light.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 29, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae Joo, Mark L. Brongersma, Junghyun Park
  • Publication number: 20200379349
    Abstract: To address the needs in the art, a method of fabricating a meta-surface antireflective coating that includes forming on a substrate or in a film on the substrate, using a patterning method, a pattern of nanostructures, where the nanostructures include a pattern of nanowires or a pattern of nanoparticles, or the pattern nanowires and the pattern of nanoparticles, where the nanostructures are arranged to form a metasurface AR coating, where the metasurface AR coating reflects incident light in a double-dip reflectance according to a doubly-resonant arrangement of the metasurface AR coating, where the metasurface AR coating comprises a structure for a direct light pathway and a resonant light pathway.
    Type: Application
    Filed: March 28, 2018
    Publication date: December 3, 2020
    Inventors: Concetto Eugenio Andrea Cordaro, Emanuele Francesco Pecora, Mark L. Brongersma, Jorik Van de Groep
  • Patent number: 10816828
    Abstract: A multi-stack graphene structure includes a graphene stack that includes graphene layers including amorphous graphene and thin film dielectric layers. The graphene layers include amorphous graphene. The graphene layers and the thin dielectric layers are alternately stacked on one another. The multi-stack graphene structure also includes an electric field former configured to apply an electric field to the graphene layers.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: October 27, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JR. UNIVERSITY
    Inventors: Wonjae Joo, Juhyung Kang, Soojin Kim, Mark L. Brongersma, Shanhui Fan
  • Patent number: 10795234
    Abstract: A monolithic optical device for light manipulation and control at visible wavelengths includes a device layer deposited on an sacrificial layer deposited on a reflective substrate. The device layer comprises an elastic support structure and nanoscale optical antenna elements, arranged such that the nanoscale optical antenna elements are capable of moving vertically in response to application of an electrostatic potential between the device layer and the reflective substrate. The sacrificial layer joins the elastic support structure to the reflective substrate. The reflective substrate is reflective at optical wavelengths.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 6, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Mark L. Brongersma, Aaron L. Holsteen
  • Publication number: 20200241353
    Abstract: Provided are a grating device, a screen including the grating device, a method of manufacturing the screen, and a display apparatus including the screen. The grating device includes a transparent substrate and a diffraction grating arranged on the transparent substrate, the diffraction grating includes a plurality of meta-diffraction patterns, and each meta-diffraction pattern has a curved shape with a center of curvature provided in a direction parallel to the substrate. The screen includes a first polarizer, a second polarizer arranged next to the first polarizer, and a diffraction grating that is transparent to polarized light that has passed through the second polarizer and reflects polarized light having a polarization direction perpendicular to the polarized light, wherein the diffraction grating includes a plurality of meta-diffraction patterns, each meta-diffraction pattern having a curved shape with a center of curvature positioned in a travelling direction of incident light.
    Type: Application
    Filed: January 30, 2020
    Publication date: July 30, 2020
    Applicants: SAMSUNG ELECTRONICS CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Sunghoon LEE, Mark L. BRONGERSMA, Brandon BORN
  • Patent number: 10649303
    Abstract: An optical device and an optical system including the optical device are provided. The optical device may include a reflective layer and a plurality of nano-beams spaced apart from the reflective layer. The plurality of nano-beams may be formed as a metasurface. The nano-beams may have a pattern structure having a plurality of metasurface forms, and the distance of the gaps between the plurality of nano-beams and the reflective layer may be adjustable individually or as a whole. The optical device may be a beam steering device or an optical phase modulator.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: May 12, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae Joo, Mark L. Brongersma, Juhyung Kang
  • Patent number: 10615372
    Abstract: A light emitting device including a micro cavity having a phase modulation surface and a display apparatus including the light emitting device are provided. The light emitting device includes a reflective layer including a phase modulation surface; a first electrode disposed on the phase modulation surface of the reflective layer; a light emitting structure disposed on the first electrode; and a second electrode disposed on the light emitting structure. The phase modulation surface may include a plurality of nano scale patterns that are regularly or irregularly arranged. The reflective layer and the second electrode may constitute the micro cavity having a resonance wavelength of the light emitting device.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 7, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Wonjae Joo, Mark L. Brongersma, Majid Esfandyarpour
  • Patent number: 10615561
    Abstract: A multi-wavelength laser apparatus is provided. The multi-wavelength laser apparatus may include a meta-mirror layer having a surface in which a plurality of patterns are formed, a laser emitter disposed on the meta-mirror layer, and an upper-mirror layer disposed on the laser emitter. The multi-wavelength laser apparatus may further include a conductive graphene layer between the meta-mirror layer and the laser emitter.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 7, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae Joo, Younggeun Roh, Majid Esfandyarpour, Mark L. Brongersma, Yeonsang Park
  • Patent number: 10591643
    Abstract: Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 17, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Dianmin Lin, Mark L. Brongersma, Pieter G. Kik, Gordon Wetzstein
  • Publication number: 20200081099
    Abstract: A laser beam steering system is disclosed. The system includes a laser source which produces a pulsed laser light beam with a frequency comb spectrum, a metasurface configured to i) receive the pulsed laser, ii) generate a diffracted pulsed laser output at different frequencies with a beam at a center frequency normal to the metasurface, and iii) directing light at different frequencies onto different foci at a focal plane, light propagating from the focal plane leads to generation of one or more optical beams that are controlled in space and time.
    Type: Application
    Filed: April 17, 2018
    Publication date: March 12, 2020
    Applicants: Purdue Research Foundation, THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Amr Mohammad E. A. SHALTOUT, Vladimir M. SHALAEV, Mark L. BRONGERSMA
  • Publication number: 20200073031
    Abstract: Provided are a diffraction grating device, a method of manufacturing the diffraction grating device, and an optical apparatus including the diffraction grating device. The diffraction grating device includes a diffraction grating arranged on a light reflection substrate. The diffraction grating includes a plurality of diffraction elements, each diffraction element from among the plurality of diffraction elements having a height that causes a destructive interference between first light rays reflected by a top surface therefore and second light rays reflected by a bottom surface thereof, the first and second light rays being incident on the top and bottom surfaces, respectively, at an incidence angle greater than 45°.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Applicants: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Brandon BORN, Mark L. BRONGERSMA, Sunghoon LEE
  • Publication number: 20200049997
    Abstract: Waveguide enhanced resonant diffraction is provided in grating structures having negligible non-resonant diffraction by the grating. This is done by making the grating thickness much less than any relevant wavelength, and by having the grating in proximity to a waveguide for diffractive coupling to and from a mode of the waveguide. Material absorption in the grating material can be used to suppress undesired diffraction orders. The resulting structures can provide rainbow-free diffractive optical sampling.
    Type: Application
    Filed: August 9, 2019
    Publication date: February 13, 2020
    Inventors: Jung-Hwan Song, Mark L. Brongersma
  • Publication number: 20190384074
    Abstract: A multi-stack graphene structure includes a graphene stack that includes graphene layers including amorphous graphene and thin film dielectric layers. The graphene layers include amorphous graphene. The graphene layers and the thin dielectric layers are alternately stacked on one another. The multi-stack graphene structure also includes an electric field former configured to apply an electric field to the graphene layers.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 19, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JR. UNIVERSITY
    Inventors: Wonjae JOO, Juhyung KANG, Soojin KIM, Mark L. BRONGERSMA, Shanhui FAN
  • Publication number: 20190198817
    Abstract: A light emitting device including a micro cavity having a phase modulation surface and a display apparatus including the light emitting device are provided. The light emitting device includes a reflective layer including a phase modulation surface; a first electrode disposed on the phase modulation surface of the reflective layer; a light emitting structure disposed on the first electrode; and a second electrode disposed on the light emitting structure. The phase modulation surface may include a plurality of nano scale patterns that are regularly or irregularly arranged. The reflective layer and the second electrode may constitute the micro cavity having a resonance wavelength of the light emitting device.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Wonjae JOO, Mark L. BRONGERSMA, Majid ESFANDYARPOUR
  • Publication number: 20190064417
    Abstract: A beam steering method and device are provided. The beam steering method includes outputting, from a hologram recording medium on which a plurality of signal light beams having different steering information are recorded, signal light beam having specific steering information, by making reference light having a specific characteristic incident on the hologram recording medium. The method further includes o obtaining information about an object existing in the external environment based on the output signal light.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae JOO, Mark L. BRONGERSMA, Junghyun PARK
  • Patent number: 10126466
    Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.
    Type: Grant
    Filed: January 29, 2017
    Date of Patent: November 13, 2018
    Assignees: The Board of Trustees of the Leland Stanford Junior University, Technion Research and Development Foundation Limited
    Inventors: Dianmin Lin, Mark L. Brongersma, Erez Hasman, Pieter G. Kik, Aaron L. Holsteen
  • Publication number: 20180314130
    Abstract: An optical device and an optical system including the optical device are provided. The optical device may include a reflective layer and a plurality of nano-beams spaced apart from the reflective layer. The plurality of nano-beams may be formed as a metasurface. The nano-beams may have a pattern structure having a plurality of metasurface forms, and the distance of the gaps between the plurality of nano-beams and the reflective layer may be adjustable individually or as a whole. The optical device may be a beam steering device or an optical phase modulator.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Applicants: Samsung Electronics Co., Ltd., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae JOO, Mark L. BRONGERSMA, Juhyung KANG
  • Publication number: 20180316155
    Abstract: A multi-wavelength laser apparatus is provided. The multi-wavelength laser apparatus may include a meta-mirror layer having a surface in which a plurality of patterns are formed, a laser emitter disposed on the meta-mirror layer, and an upper-mirror layer disposed on the laser emitter. The multi-wavelength laser apparatus may further include a conductive graphene layer between the meta-mirror layer and the laser emitter.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Applicants: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae JOO, Younggeun ROH, Majid ESFANDYARPOUR, Mark L. BRONGERSMA, Yeonsang PARK
  • Publication number: 20180299743
    Abstract: A monolithic optical device for light manipulation and control at visible wavelengths includes a device layer deposited on an sacrificial layer deposited on a reflective substrate. The device layer comprises an elastic support structure and nanoscale optical antenna elements, arranged such that the nanoscale optical antenna elements are capable of moving vertically in response to application of an electrostatic potential between the device layer and the reflective substrate. The sacrificial layer joins the elastic support structure to the reflective substrate. The reflective substrate is reflective at optical wavelengths.
    Type: Application
    Filed: April 18, 2018
    Publication date: October 18, 2018
    Inventors: Mark L. Brongersma, Aaron L. Holsteen