Patents by Inventor Lingchen KONG

Lingchen KONG 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).

  • Method for generating femtosecond vortex beams with high spatial intensity contrast
    Patent number: 9991667
    Abstract: A method for generating femtosecond vortex beams with high spatial intensity contrast, where a noncollinearly pumped HG beam femtosecond laser generates femtosecond HG beam and a cylindrical lens mode converter converts the femtosecond HG beam to femtosecond LG vortex beam. The HG beam femtosecond laser comprises a pump source, a gain medium, a saturable absorption mirror as mode-locker, and an output coupler with a noncollinear angle between the laser beam and the pump beam in the gain medium, which enables the laser to generate pure, order-tunable femtosecond HG beams. Femtosecond vortex beams obtained after the cylindrical lens converter have high-intensity-contrast, and are topological charge-tunable.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: June 5, 2018
    Assignee: Shanghai Jiao Tong University
    Inventors: Guoqiang Xie, Liejia Qian, Zhen Qiao, Lingchen Kong, Zhipeng Qin, Peng Yuan
  • METHOD FOR GENERATING FEMTOSECOND VORTEX BEAMS WITH HIGH SPATIAL INTENSITY CONTRAST
    Publication number: 20170310071
    Abstract: A method for generating femtosecond vortex beams with high spatial intensity contrast, where a noncollinearly pumped HG beam femtosecond laser generates femtosecond HG beam and a cylindrical lens mode converter converts the femtosecond HG beam to femtosecond LG vortex beam. The HG beam femtosecond laser comprises a pump source, a gain medium, a saturable absorption mirror as mode-locker, and an output coupler with a noncollinear angle between the laser beam and the pump beam in the gain medium, which enables the laser to generate pure, order-tunable femtosecond HG beams. Femtosecond vortex beams obtained after the cylindrical lens converter have high-intensity-contrast, and are topological charge-tunable.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 26, 2017
    Inventors: Guoqiang XIE, Liejia QIAN, Zhen QIAO, Lingchen KONG, Zhipeng QIN, Peng YUAN
  • Mini fridge
    Patent number: D927562
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: August 10, 2021
    Assignee: SHANDONG XINGXIAN IMPORT AND EXPORT CO., LTD.
    Inventor: Lingchen Kong
  • Mini fridge
    Patent number: D940209
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: January 4, 2022
    Assignee: SHANDONG XINGXIAN IMPORT AND EXPORT CO., LTD.
    Inventor: Lingchen Kong