Patents by Inventor Quanfa LI

Quanfa LI 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).

  • Fiber laser
    Patent number: 9692200
    Abstract: The present disclosure discloses a fiber laser, including a laser seed source, an amplifying optical path, an output optical isolator and an optical fiber cylinder; wherein, the amplifying optical path is connected to the laser seed source and the output optical isolator, the laser seed source is used to output optical source, the amplifying optical path includes a first stage amplifying optical path and a second stage amplifying optical path, the first stage amplifying optical path is connected to the laser seed source and the second stage amplifying optical path respectively, the output optical source is output via the output optical isolator after two-stage amplifying; the second stage amplifying optical path comprises a multi-mode active optical fiber; the multi-mode active optical fiber is coiled on the optical fiber cylinder. By the disposing way above, the present disclosure may improve output optical beam quality of the fiber laser.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: June 27, 2017
    Assignee: MAXPHOTONICS CORPORATION
    Inventors: Jian Ju, Yiran Liu, Quanfa Li, Wei Li, Hong Chen, Feng Jiang
  • FIBER LASER
    Publication number: 20170155226
    Abstract: The present disclosure discloses a fiber laser, including a laser seed source, an amplifying optical path, an output optical isolator and an optical fiber cylinder; wherein, the amplifying optical path is connected to the laser seed source and the output optical isolator, the laser seed source is used to output optical source, the amplifying optical path includes a first stage amplifying optical path and a second stage amplifying optical path, the first stage amplifying optical path is connected to the laser seed source and the second stage amplifying optical path respectively, the output optical source is output via the output optical isolator after two-stage amplifying; the second stage amplifying optical path comprises a multi-mode active optical fiber; the multi-mode active optical fiber is coiled on the optical fiber cylinder. By the disposing way above, the present disclosure may improve output optical beam quality of the fiber laser.
    Type: Application
    Filed: May 30, 2016
    Publication date: June 1, 2017
    Applicant: Maxphotonics Corporation
    Inventors: Jian JU, Yiran LIU, Quanfa LI, Wei LI, Hong CHEN, Feng JIANG