Patents by Inventor Mahmood Bagheri

Mahmood Bagheri 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).

  • Single-mode, distributed feedback interband cascade lasers
    Patent number: 9438011
    Abstract: Single-mode, distributed feedback interband cascade lasers (ICLs) using distributed-feedback gratings (e.g., lateral Bragg gratings) and methods of fabricating such ICLs are provided. The ICLs incorporate distributed-feedback gratings that are formed above the laser active region and adjacent the ridge waveguide (RWG) of the ICL. The ICLs may incorporate a double-ridge system comprising an optical confinement structure (e.g., a RWG) disposed above the laser active region that comprises the first ridge of the double ridge system, a DFB grating (e.g., lateral Bragg grating) disposed above the laser active region and adjacent the optical confinement structure, and an electric confinement structure that passes at least partially through the laser active region and that defines the boundary of the second ridge comprises and the termination of the DFB grating.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: September 6, 2016
    Assignee: California Institute of Technology
    Inventors: Clifford F. Frez, Carl E. Borgentun, Ryan M. Briggs, Mahmood Bagheri, Siamak Forouhar
  • SINGLE-MODE, DISTRIBUTED FEEDBACK INTERBAND CASCADE LASERS
    Publication number: 20160049770
    Abstract: Single-mode, distributed feedback interband cascade lasers (ICLs) using distributed-feedback gratings (e.g., lateral Bragg gratings) and methods of fabricating such ICLs are provided. The ICLs incorporate distributed-feedback gratings that are formed above the laser active region and adjacent the ridge waveguide (RWG) of the ICL. The ICLs may incorporate a double-ridge system comprising an optical confinement structure (e.g., a RWG) disposed above the laser active region that comprises the first ridge of the double ridge system, a DFB grating (e.g., lateral Bragg grating) disposed above the laser active region and adjacent the optical confinement structure, and an electric confinement structure that passes at least partially through the laser active region and that defines the boundary of the second ridge comprises and the termination of the DFB grating.
    Type: Application
    Filed: August 12, 2015
    Publication date: February 18, 2016
    Inventors: Clifford F. Frez, Carl E. Borgentun, Ryan M. Briggs, Mahmood Bagheri, Siamak Forouhar