Patents by Inventor David D. Nolte

David D. Nolte 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).

  • LTG AlGaAs non-linear optical material and devices fabricated therefrom
    Patent number: 5508829
    Abstract: A light responsive device (10) has a body (12) that includes a matrix comprised of Group III-V material, the matrix having inclusions (14) comprised of a Group V material contained therein. The body is responsive to a presence of a light beam that has a spatially varying intensity for modifying in a corresponding spatially varying manner a distribution of trapped photoexcited charge carriers within the body. The distribution of trapped charge carriers induces a corresponding spatial variation in at least one optical property of the Group III-V material, such as the index of refraction of the Group III-V material and/or an absorption coefficient of the Group III-V material. The Group III-V material is comprised of LTG GaAs:As or LTG AlGaAs:As.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: April 16, 1996
    Assignee: International Business Machines Corporation
    Inventors: John L. Freeouf, Rodney T. Hodgson, Peter D. Kirchner, Michael R. Melloch, Jerry M. Woodall, David D. Nolte
  • Optical processing using a multilayer heterostructure
    Patent number: 5004325
    Abstract: An electro-optic medium, useful for image processing, is formed by creating a distribution of deep impurity levels over essentially all the lateral extent of a multilayer heterostructure. This treatment renders the heterostructure semi-insulating, and as a consequence, individual image-resolution elements are isolated. Described is an optical system comprising such an electro-optic medium.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: April 2, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: Alastair M. Glass, Wayne H. Knox, David D. Nolte