Patents by Inventor Richard Andrew Hogg

Richard Andrew Hogg 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).

  • Patent number: 9088127
    Abstract: A multisection quantum dot laser (7) comprising at least first (8) and second (9) sections, each section (8, 9) comprising a semiconductor substrate (2) comprising p (3) and n type (4) layers and a quantum dot layer sandwiched therebetween; the semiconductor substrate (2) comprising a back electrical contact in electrical contact with one of the p and n type layers and a tuning electrical contact (13, 14) in electrical contact with the other of the p and n type layers; the quantum-dot layers of the first (10) and second (11) sections being portions of the same quantum dot layer (12) forming a laser cavity.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: July 21, 2015
    Assignee: Finisar UK Limited
    Inventors: Richard Andrew Hogg, David Timothy Dylan Childs, Benjamin James Stevens, Kristian Michael Groom
  • Publication number: 20110176564
    Abstract: A multisection quantum dot laser (7) comprising at least first (8) and second (9) sections, each section (8, 9) comprising a semiconductor substrate (2) comprising p (3) and n type (4) layers and a quantum dot layer sandwiched therebetween; the semiconductor substrate (2) comprising a back electrical contact in electrical contact with one of the p and n type layers and a tuning electrical contact (13, 14) in electrical contact with the other of the p and n type layers; the quantum-dot layers of the first (10) and second (11) sections being portions of the same quantum dot layer (12) forming a laser cavity.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 21, 2011
    Inventors: Richard Andrew Hogg, David Timothy Dylan Childs, Benjamin James Stevens, Kristian Michael Groom
  • Patent number: 6388799
    Abstract: An optical device for efficient radiation emission having a modulation region with phase matching means (1) for enhancing the phase matching between two different frequency signals propagating in the optical modulation region (1) in response to illumination by at least one incident beam (7, 8), the phase matching means (1), having a spatial variation in its refractive index (5) along the path of the incident radiation beam (7, 8). The device may be configured as a radiation source comprising a frequency conversion member (C2) for emitting a beam of radiation (553) in response to irradiation by one or more input beams (507), the emitted beam (553) having a frequency different to that of the one or more input beams (507), the one or more input beams (507) all being produced within a lasing cavity (defined by M3, M4, M5, M6 and output coupler (523)) and said frequency conversion member (C2) being located within said lasing cavity. The invention also extends to an imaging system using the radiation source.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: May 14, 2002
    Assignee: Toshiba Research Europe Limited
    Inventors: Donald Dominic Arnone, Andrew James Shields, Richard Andrew Hogg, Craig Michael Ciesla, David Mark Whittaker, Edmund Harold Linfield, Alexander Giles Davies