Patents by Inventor Ebrahim Dakhil Al Johani

Ebrahim Dakhil Al Johani 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).

  • Resonance enhanced surface illuminated sub-bandgap infrared photodetectors
    Patent number: 11605752
    Abstract: Photodetectors using photonic crystals (PhCs) in polysilicon film that include an in-plane resonant defect. A biatomic photodetector includes an optical defect mode that is confined from all directions in the plane of the PhC by the photonic bandgap structure. The coupling of the resonance (or defect) mode to out-of-plane radiation can be adjusted by the design of the defect. Further, a “guided-mode resonance” (GMR) photodetector provides in-plane resonance through a second-order grating effect in the PhC. Absorption of an illumination field can be enhanced through this resonance.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 14, 2023
    Assignee: Massachusetts Institute of Technology
    Inventors: Amir H. Atabaki, Rajeev J. Ram, Ebrahim Dakhil Al Johani
  • Resonance Enhanced Surface Illuminated Sub-Bandgap Infrared Photodetectors
    Publication number: 20210091252
    Abstract: Photodetectors using photonic crystals (PhCs) in polysilicon film that include an in-plane resonant defect. A biatomic photodetector includes an optical defect mode that is confined from all directions in the plane of the PhC by the photonic bandgap structure. The coupling of the resonance (or defect) mode to out-of-plane radiation can be adjusted by the design of the defect. Further, a “guided-mode resonance” (GMR) photodetector provides in-plane resonance through a second-order grating effect in the PhC. Absorption of an illumination field can be enhanced through this resonance.
    Type: Application
    Filed: September 25, 2020
    Publication date: March 25, 2021
    Inventors: Amir H. Atabaki, Rajeev J. RAM, Ebrahim Dakhil Al Johani