Patents by Inventor Mattias HAMMAR

Mattias HAMMAR 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).

  • VERTICAL-CAVITY SURFACE-EMITTING TRANSISTOR LASER, T-VCSEL AND METHOD FOR PRODUCING THE SAME
    Publication number: 20150318666
    Abstract: It is provided a transistor vertical-cavity surface-emitting laser, T-VCSEL comprising: a collector section (13) comprising a bottom substrate (11) and a base contacting layer (172), defining the collector region, an emitter section (14) and a base section (16), arranged between the emitter section (14) and the collector section (13), and comprising a collector contacting layer (171) and a light emitting active layer (17), arranged between layers (15, 15?) of a base material. The emitter section (14) comprises a current confining blocking layer (110) that comprises a first material layer (112), having a first type of doping and comprising a current confining means (111, 211) and a second material layer (19), defining the emitter region, having a second type of doping and being provided on the base side of the material layer (112).
    Type: Application
    Filed: December 4, 2013
    Publication date: November 5, 2015
    Inventors: Mattias HAMMAR, Rickard MARCKS VON WÜRTEMBERG, Xingang YU