Patents by Inventor Liuhao Ma

Liuhao Ma 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).

  • Laser dispersion spectroscopy for non-intrusive combustion diagnostics
    Patent number: 10718706
    Abstract: Systems and methods of laser dispersion spectroscopy for in situ, quantitative and non-intrusive measurements of combustion parameters, such as temperature and gas concentrations are provided. The system includes a laser source configured to sweep across the spectral features of molecules, an RF generator configured to modulate a laser to generate a three-tone laser beam, a photodetector configured to detect the transmitted three-tone laser beam to generate a heterodyne beat note signal, and a lock-in amplifier configured to further process the beat note signal in order to measure a phase of the heterodyne beat note signal.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 21, 2020
    Assignee: The Chinese University of Hong Kong
    Inventors: Wei Ren, Liuhao Ma, Zhen Wang, Kin Pang Cheong
  • LASER DISPERSION SPECTROSCOPY FOR NON-INTRUSIVE COMBUSTION DIAGNOSTICS
    Publication number: 20190339194
    Abstract: Systems and methods of laser dispersion spectroscopy for in situ, quantitative and non-intrusive measurements of combustion parameters, such as temperature and gas concentrations are provided. The system includes a laser source configured to sweep across the spectral features of molecules, an RF generator configured to modulate a laser to generate a three-tone laser beam, a photodetector configured to detect the transmitted three-tone laser beam to generate a heterodyne beat note signal, and a lock-in amplifier configured to further process the beat note signal in order to measure a phase of the heterodyne beat note signal.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 7, 2019
    Inventors: Wei Ren, Liuhao Ma, Zhen Wang, Kin Pang Cheong