Patents by Inventor Anna Kullander-Sjoberg

Anna Kullander-Sjoberg 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).

  • Field modulated vertical cavity surface-emitting laser with internal optical pumping
    Patent number: 6285704
    Abstract: A vertical cavity surface emitting laser diode (VCSEL), includes top and bottom electrically non-conductive mirrors defining a first laser cavity containing a laser medium and designed to resonate at a first wavelength. A second laser cavity is designed to resonate at a second wavelength less than the first wavelength. The second laser cavity is optically coupled to the first laser cavity so as to pump the laser medium and create laser action in the first laser cavity. The second laser cavity is normally provided by a VCSEL stacked below the first laser cavity.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: September 4, 2001
    Assignee: Mitel Semiconductor AB
    Inventors: Anna Kullander-Sjoberg, Michael Widman