Patents by Inventor Haitham A. R. El-Ella

Haitham A. R. El-Ella 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).

  • Magnetometer for measuring an unknown external magnetic field
    Patent number: 11340320
    Abstract: The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (?) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 24, 2022
    Assignee: Danmarks Tekniske Universitet
    Inventors: Alexander Huck, Sepehr Ahmadi, Haitham A. R. El-Ella, Ulrik Lund Andersen
  • A MAGNETOMETER USING OPTICALLY ACTIVE DEFECTS IN A SOLID STATE MATERIAL
    Publication number: 20200158798
    Abstract: The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (?) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g.
    Type: Application
    Filed: June 29, 2018
    Publication date: May 21, 2020
    Inventors: Alexander Huck, Sepehr Ahmadi, Haitham A. R. El-Ella, Ulrik Lund Andersen