Patents by Inventor Federico Capasso

Federico Capasso 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: 12248118
    Abstract: An optical metasurface film includes a flexible polymeric film having a first major surface, a patterned polymer layer having a first surface proximate to the first major surface of the flexible polymeric film and having a second nanostructured surface opposite the first surface, and a refractive index contrast layer adjacent to the nanostructured surface of the patterned polymer layer forming a nanostructured bilayer with a nanostructured interface. The nanostructured bilayer acts locally on amplitude, phase, or polarization of light, or a combination thereof and imparts a light phase shift that varies as a function of position of the nano structured bilayer on the flexible polymeric film. The light phase shift of the nanostructured bilayer defines a predetermined operative phase profile of the optical metasurface film.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: March 11, 2025
    Assignees: 3M Innovative Properties Company, President and Fellows of Harvard College
    Inventors: Martin B. Wolk, Robert L. Brott, Karl K. Stensvad, James M. Nelson, Federico Capasso, Xinghui Yin, Joon-Suh Park
  • Patent number: 12242023
    Abstract: Polarization-insensitive metasurfaces using anisotropic nanostructures are disclosed. These anisotropic structures allow for an accurate implementation of phase, group delay, and group delay dispersion, while simultaneously making it possible to realize a polarizationinsensitive, diffraction-limited and achromatic metalens for wavelength, e.g., ?=from about 460 nm to about 700 nm. The approach of polarization-insensitivity can be also applied for other metasurface devices with applications in, e.g., imaging and virtual or augmented reality.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: March 4, 2025
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Wei-Ting Chen, Alexander Yutong Zhu, Federico Capasso
  • Publication number: 20250028182
    Abstract: An optical component comprises a metasurface comprising nanoscale elements. The metasurface is configured to receive incident light and to generate optical outputs. The geometries and/or orientations of the nanoscale elements provide a first optical output upon receiving a polarized incident light with a first polarization, and provide a second optical output upon receiving a polarized incident light with a second polarization that is different from the first polarization.
    Type: Application
    Filed: October 4, 2024
    Publication date: January 23, 2025
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. RUBIN, Jan Philipp Balthasar MUELLER, Federico CAPASSO
  • Publication number: 20240427163
    Abstract: Metasurface optical components deposited on the surface of a substrate are used to alter incident light. The metasurface optical components comprise a pattern of silicon dielectric resonators that have nonperiodic gap distances between adjacent silicon dielectric resonators; and each silicon dielectric resonator is an elongated rectangular prism that has a width, a length, and a thickness. Incident light is directed to the metasurface optical components, wherein the gap distances, the widths, and the thicknesses are configured to scatter the incident light and impart a phase shift, ranging at least from 0 to 2?, on an outgoing light. Each dielectric resonator has a rectangular cross-section in a plane perpendicular to the substrate surface such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
    Type: Application
    Filed: May 20, 2024
    Publication date: December 26, 2024
    Inventors: Francesco Aieta, Mikhail Kats, Patrice Genevet, Federico Capasso, Mohammadreza Khorasaninejad
  • Patent number: 12169306
    Abstract: An optical system, comprising: (i) multiple input optical fibers; (ii) an optical mode multiplexer/demultiplexer coupled to said input optical fibers with, said optical mode multiplexer/demultiplexer comprising a plurality of metamaterial structures having length and forming at least one stage of metamaterials, the at least one stage of metamaterials is being situated on a surface of the optical mode multiplexer/demultiplexer facing the input optical fibers, and the at least one stage of metamaterials is oriented at angles between 60 and 120 degrees relative to the axis of the input fibers; and the metasurfaces are structured to receive a first optical signal having a first mode from at least one of said multiple input optical fibers and convert the first mode to a different mode.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: December 17, 2024
    Assignees: CORNING INCORPORATED, President and Fellows of Harvard College
    Inventors: Federico Capasso, Wei-Ting Chen, Paulo Clovis Dainese, Jr., Kangmei Li, Ming-Jun Li, Jaewon Oh, Jun Yang
  • Patent number: 12135433
    Abstract: An optical component comprises a metasurface comprising nanoscale elements. The metasurface is configured to receive incident light and to generate optical outputs. The geometries and/or orientations of the nanoscale elements provide a first optical output upon receiving a polarized incident light with a first polarization, and provide a second optical output upon receiving a polarized incident light with a second polarization that is different from the first polarization.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: November 5, 2024
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. Rubin, Jan Philipp Balthasar Mueller, Federico Capasso
  • Publication number: 20240319670
    Abstract: A system can include a wavefront-shaping device. The wavefront-shaping device can project one or more light sheets along an optical path. The one or more light sheets can include one or more light threads. Each of the one or more light threads can be non-diffracting and structured along the optical path. At least one plane of the one or more light sheets can be non-parallel to a plane of the wavefront-shaping device.
    Type: Application
    Filed: March 15, 2024
    Publication date: September 26, 2024
    Applicants: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, University of São Paulo, University of Campinas
    Inventors: Ahmed H. DORRAH, Federico CAPASSO, Leonardo A. AMBROSIO, Michel ZAMBONI-RACHED, Priyanuj BORDOLOI, Vinicius S. DE ANGELIS, Jhonas Olivati DE SARRO
  • Patent number: 12078834
    Abstract: An optical component includes a substrate and a metasurface comprising one or more linearly birefringent elements. The linearly birefringent elements define a grating configured to implement parallel polarization analysis for a plurality of polarization orders for incident light of an arbitrary polarization.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: September 3, 2024
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. Rubin, Federico Capasso
  • Publication number: 20240241288
    Abstract: An optical device comprises a metasurface including a plurality of nanostructures. The nanostructures convert an input light of an arbitrary spin state into an output light of an arbitrary total angular momentum state characterized by a superposition of two independent orbital angular momentum (OAM) states.
    Type: Application
    Filed: September 14, 2018
    Publication date: July 18, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Federico CAPASSO, Antonio AMBROSIO, Noah A. RUBIN, Robert C. DEVLIN, Yao-Wei HUANG
  • Publication number: 20240231118
    Abstract: Disclosed is a sensor for determining a physical characteristic, comprising a linear polarizer, a polarization-sensitive metalens, positioned between the linear polarizer and a photosensor, configured to manipulate light from a scene filtered by the linear polarizer, according to two or more phase profiles to simultaneously produce at least two spatial frequency filtered images on a surface of the photosensor, and processing circuitry configured to receive, from the photosensor, a measurement corresponding to the at least two spatial frequency filtered images, and determine, according to the measurement, a depth associated with at least one feature in the scene.
    Type: Application
    Filed: May 4, 2022
    Publication date: July 11, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Dean Samer HAZINEH, Zhujun SHI, Qi GUO, Todd ZICKLER, Federico CAPASSO
  • Patent number: 12025812
    Abstract: Multi-wavelength light is directed to an optic including a substrate and metasurface optical components deposited on a surface of the substrate. The metasurface optical components comprise a pattern of silicon dielectric resonators with nonperiodic gap distances between adjacent dielectric resonators. Incident light directed to the metasurface optical components is scattered and phase-shifted by the configuration of the gap distances and the widths and thicknesses of the dielectric resonators. Each dielectric resonator has a rectangular cross-section such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
    Type: Grant
    Filed: July 11, 2023
    Date of Patent: July 2, 2024
    Assignee: President and Fellows of Harvard College
    Inventors: Francesco Aieta, Mikhail Kats, Patrice Genevet, Federico Capasso, Mohammadreza Khorasaninejad
  • Publication number: 20240210246
    Abstract: An attachment for an intensity-only sensor in an imaging device includes a polarization-sensitive diffraction grating. The polarization-sensitive diffraction grating is configured to receive incident light from a scene, and to modify the incident light to simultaneously produce a plurality of non-overlapping images of the scene. each of a different diffraction order, on the intensity-only sensor to facilitate full-Stokes imaging polarimetry. The attachment includes a first adjustment mechanism configured to control at least one of: vignetting of the plurality of non-overlapping images on the intensity-only sensor, or an object distance of the imaging device.
    Type: Application
    Filed: July 22, 2022
    Publication date: June 27, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. RUBIN, Paul CHEVALIER, Federico CAPASSO
  • Patent number: 11994687
    Abstract: A display system includes an optical device configured according to constructive interference for a plurality of wavelengths at a focal length. The display system includes a fiber. The display system includes a controller configured to scan the fiber using a Lissajous scanning method to generate a display. The display can be disposed within a focal plane of the optical device. The controller is configured to modulate light intensity from the fiber. The controller can be configured to form a display image that passes through the optical device. The display system can include an optical combiner configured to reflect the display image from the optical device and form a virtual image. The optical device can be configured to magnify a display image from the display and form a virtual image.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: May 28, 2024
    Assignees: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, TRUSTEES OF BOSTON UNIVERSITY
    Inventors: Zhaoyi Li, Yao-Wei Huang, Peng Lin, Ji-Xin Cheng, Federico Capasso
  • Patent number: 11977221
    Abstract: An optical device for aberration correction (e.g., chromatic aberration correction) is disclosed. The optical device includes an optical component (e.g., a spherical lens) and a metasurface optically coupled to the optical component. The metasurface includes a plurality of nanostructures that define a phase profile. The phase profile corrects an aberration (e.g., chromatic aberration) caused by the optical component. The resulting optical device becomes diffraction-limited (e.g., for the visible spectrum) with the metasurface.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 7, 2024
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Wei-Ting Chen, Alexander Yutong Zhu, Jared F. G. Sisler, Federico Capasso
  • Publication number: 20240142686
    Abstract: The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.
    Type: Application
    Filed: December 4, 2023
    Publication date: May 2, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. RUBIN, Federico CAPASSO
  • Patent number: 11973306
    Abstract: Disclosed is a laser system including a first laser and a second laser. The first laser includes a laser cavity, and a gas phase molecular gain medium disposed in the laser cavity, the gain medium having an absorption band. The second laser is a solid state laser configured to be continuously tunable, with respect to an emission wavelength of the second laser, over the absorption band of the gain medium, and the second laser is tuned to pump rotational vibrational transitions in the gain medium to achieve a rotational population inversion.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: April 30, 2024
    Assignees: PRESIDENT AND FELLOWS OF HARVARD COLLEGE, Massachusetts Institute of Technology, The United States of America as Represented by the Secretary of the Army
    Inventors: Paul Chevalier, Arman Amirzhan, Marco Piccardo, Fan Wang, Steven Glen Johnson, Henry O. Everitt, Federico Capasso
  • Publication number: 20240118554
    Abstract: Multi-wavelength light is directed to an optic including a substrate and metasurface optical components deposited on a surface of the substrate. The metasurface optical components comprise a pattern of silicon dielectric resonators with nonperiodic gap distances between adjacent dielectric resonators. Incident light directed to the metasurface optical components is scattered and phase-shifted by the configuration of the gap distances and the widths and thicknesses of the dielectric resonators. Each dielectric resonator has a rectangular cross-section such that a first phase shift is imparted for a transverse-electric (TE) component of the incident light and a second phase shift is imparted for a transverse-magnetic (TM) component of the incident light.
    Type: Application
    Filed: July 11, 2023
    Publication date: April 11, 2024
    Applicant: President and Fellows of Harvard College
    Inventors: Francesco Aieta, Mikhail Kats, Patrice Genevet, Federico Capasso, Mohammadreza Khorasaninejad
  • Publication number: 20240094439
    Abstract: An optical component can include a substrate. The optical component can include a metasurface disposed on the substrate. The metasurface can include one or more linearly birefringent elements. A spatially-varying Jones matrix and a far-field of the metasurface can define a transfer function of the metasurface configured to generate a controlled response in the far-field according to polarization of light incident on the metasurface.
    Type: Application
    Filed: December 27, 2021
    Publication date: March 21, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. RUBIN, Mohammad Aun Abbas ZAIDI, Federico CAPASSO
  • Publication number: 20240061219
    Abstract: A method of fabricating a visible spectrum optical component includes: providing a substrate; forming a resist layer over a surface of the substrate; patterning the resist layer to form a patterned resist layer defining openings exposing portions of the surface of the substrate; performing deposition to form a dielectric film over the patterned resist layer and over the exposed portions of the surface of the substrate, wherein a top surface of the dielectric film is above a top surface of the patterned resist layer; removing a top portion of the dielectric film to expose the top surface of the patterned resist layer and top surfaces of dielectric units within the openings of the patterned resist layer; and removing the patterned resist layer to retain the dielectric units over the substrate.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 22, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Robert C. DEVLIN, Mohammadreza KHORASANINEJAD, Federico CAPASSO, Hongkun PARK, Alexander HIGH
  • Patent number: 11867937
    Abstract: The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: January 9, 2024
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Noah A. Rubin, Federico Capasso