Patents by Inventor Xiauguang He

Xiauguang He 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 diodes with composite material systems which decouple refractive index and band gap profiles
    Patent number: 6298078
    Abstract: Laser diodes are formed using composite material systems which result in the decoupling of the refractive index and band gap profiles of the structures formed with such systems. Laser diodes with composite material systems are described which produce desirable large diameter laser beams and low beam divergence through independent control of the two profiles.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: October 2, 2001
    Assignee: Opto Power Corporation
    Inventor: Xiauguang He
  • GaInAsP/AIGaInP laser diodes with AIGaAs type II carrier blocking layer in the waveguide
    Patent number: 6298077
    Abstract: A GaInAsP/AR GaInP laser diode is provided with an AlGaAs type II carrier blocking layer in the waveguide of the diode. The resulting diode exhibits a relatively low threshold current, an increased slope efficiency and characteristic T0 and T1, for the diodes are less limited by carrier leakage.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: October 2, 2001
    Assignee: Opto Power Corporation
    Inventor: Xiauguang He