Patents by Inventor Gerd Leuchs

Gerd Leuchs 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).

  • Apparatus and method for calibrating measuring instruments
    Patent number: 10677652
    Abstract: A method and apparatus is provided for implementing a parametric down-conversion (PDC)-based calibration comprising calibrating a measuring instrument; disposing a pinhole at a position of a light-emitting sample for which the measuring instrument needs to be calibrated; irradiating a nonlinear crystal with a light source; setting the nonlinear crystal by ensuring a phase-matching wavelength of the nonlinear crystal is set at one boundary of a desired bandwidth; acquiring one or more PDC spectrums by the measuring instrument; obtaining peak values and their corresponding wavelengths from each acquired spectrum; and obtaining a response function based on the peak values and corresponding wavelengths.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 9, 2020
    Assignees: University of Ottawa, Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V., Friedrich-Alexander-Universitaet Erlangen-Nuernberg
    Inventors: Samuel Lemieux, Mathieu Manceau, Robert W. Boyd, Gerd Leuchs, Maria V. Chekhova
  • APPARATUS AND METHOD FOR CALIBRATING MEASURING INSTRUMENTS
    Publication number: 20190339126
    Abstract: A method and apparatus is provided for implementing a parametric down-conversion (PDC)-based calibration comprising calibrating a measuring instrument; disposing a pinhole at a position of a light-emitting sample for which the measuring instrument needs to be calibrated; irradiating a nonlinear crystal with a light source; setting the nonlinear crystal by ensuring a phase-matching wavelength of the nonlinear crystal is set at one boundary of a desired bandwidth; acquiring one or more PDC spectrums by the measuring instrument; obtaining peak values and their corresponding wavelengths from each acquired spectrum; and obtaining a response function based on the peak values and corresponding wavelengths.
    Type: Application
    Filed: October 17, 2017
    Publication date: November 7, 2019
    Inventors: Samuel LEMIEUX, Mathieu MANCEAU, Robert W. BOYD, Gerd LEUCHS, Maria V. CHEKHOVA
  • Achieving gaussian outputs from large-mode-area-higher-order mode fibers
    Patent number: 7672552
    Abstract: A mode conversion technique to convert higher-order-mode into a nearly fundamental Gaussian shape by using a beam expander is developed and is particularly useful in high-power lasers and amplifiers. By using a beam expander between a transmitted fiber and a conventional mode conversion system, the strict lateral tolerance requirement can be overcome with high conversion efficiency.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: March 2, 2010
    Assignee: Furukawa Electric North America, Inc.
    Inventors: Gerd Leuchs, Norbert Lindlein, Siddharth Ramachandran
  • Achieving Gaussian Outputs from Large-Mode-Area-Higher-Order Mode Fibers
    Publication number: 20080219620
    Abstract: A mode conversion technique to convert higher-order-mode into a nearly fundamental Gaussian shape by using a beam expander is developed and is particularly useful in high-power lasers and amplifiers. By using a beam expander between a transmitted fiber and a conventional mode conversion system, the strict lateral tolerance requirement can be overcome with high conversion efficiency.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 11, 2008
    Applicant: FURUKAWA ELECTRIC NORTH AMERICA, INC.
    Inventors: Norbert Lindlein, Gerd Leuchs, Siddharth Ramachandran