Patents by Inventor Xueming SHI

Xueming SHI 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).

  • Physical system for chip-scale CPT atomic clock
    Patent number: 9118336
    Abstract: A physical system for a chip-scale coherent population trapping (CPT) atomic clock. The physical system includes: a vertical-cavity surface-emitting laser (VCSEL) device, a first polarizing beam splitter, a first ?/4 wave plate, a chip of an atomic vapor cell, a second ?/4 wave plate, a reflection device, a lens, a second polarizing beam splitter, and a photo detector. The first polarizing beam splitter, the first ?/4 wave plate, the chip of the atomic vapor cell, the second ?/4 wave plate, and the reflection device are disposed in sequence. The lens, the second polarizing beam splitter, and the photo detector are disposed in sequence.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: August 25, 2015
    Assignee: Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences
    Inventors: Sihong Gu, Yi Zhang, Suping Qu, Xueming Shi
  • PHYSICAL SYSTEM FOR CHIP-SCALE CPT ATOMIC CLOCK
    Publication number: 20140347140
    Abstract: A physical system for a chip-scale coherent population trapping (CPT) atomic clock. The physical system includes: a vertical-cavity surface-emitting laser (VCSEL) device, a first polarizing beam splitter, a first ?/4 wave plate, a chip of an atomic vapor cell, a second ?/4 wave plate, a reflection device, a lens, a second polarizing beam splitter, and a photo detector. The first polarizing beam splitter, the first ?/4 wave plate, the chip of the atomic vapor cell, the second ?/4 wave plate, and the reflection device are disposed in sequence. The lens, the second polarizing beam splitter, and the photo detector are disposed in sequence.
    Type: Application
    Filed: August 4, 2014
    Publication date: November 27, 2014
    Inventors: Sihong GU, Yi ZHANG, Suping QU, Xueming SHI