Patents by Inventor Youbo Zhao

Youbo Zhao 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).

  • Optical parametric amplification of weak signals for imaging biological tissue
    Patent number: 9506858
    Abstract: Methods and apparatus for obtaining an image of light scattering biological tissue. A series of pulses of substantially monochromatic light of a first wavelength is generated and split into two parts, of which one part illuminates a scattering biological tissue at an intensity too low to damage the tissue, while a second part is upconverted to generate a pump beam. Sample light from the biological tissue, which may be scattered (or transmitted) light, or fluorescence, or Raman scattering, etc., is collected and directed from the scattering biological tissue, along with the pump beam, into a non-linear optical element, in a single pass or multiple passes. Parametrically amplified sample light emerging from the non-linear optical element is detected and analyzed or displayed.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 29, 2016
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Stephen A. Boppart, Youbo Zhao
  • Optical Parametric Amplification of Weak Signals for Imaging Biological Tissue
    Publication number: 20140333925
    Abstract: Methods and apparatus for obtaining an image of light scattering biological tissue. A series of pulses of substantially monochromatic light of a first wavelength is generated and split into two parts, of which one part illuminates a scattering biological tissue at an intensity too low to damage the tissue, while a second part is upconverted to generate a pump beam. Sample light from the biological tissue, which may be scattered (or transmitted) light, or fluorescence, or Raman scattering, etc., is collected and directed from the scattering biological tissue, along with the pump beam, into a non-linear optical element, in a single pass or multiple passes. Parametrically amplified sample light emerging from the non-linear optical element is detected and analyzed or displayed.
    Type: Application
    Filed: January 17, 2014
    Publication date: November 13, 2014
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Stephen A. Boppart, Youbo Zhao