Patents by Inventor Stewart A. Feld

Stewart A. Feld 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: 7138284
    Abstract: A method and apparatus for burning in a semiconductor wafer having a plurality of active devices utilizes temporary conductive interconnect layers to separately couple at least a portion of the anodes of the active devices together as well as at least a portion of the cathodes of the devices together. A simplified probed pad, having a reduced number of contacts may then be utilized to apply a substantially constant voltage or current to the devices. The temporary conductive interconnect layer may be patterned to include device level resistors or array level resistors that may be used to mitigate the effects of short circuits or open circuits on the processing of the devices.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: November 21, 2006
    Assignee: Optical Communication Products, Inc.
    Inventors: John Wasserbauer, Stewart A. Feld
  • Patent number: 6916672
    Abstract: A method of forming a vertical cavity surface emitting laser (100, 600, 900) includes process steps for self-aligning the p-type ohmic contact (118, 518, 932), an oxide current aperture (122, 926a), and a central puck of re-phase material (560a, 936) around the optical axis of the laser.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: July 12, 2005
    Assignee: Optical Communication Products, Inc.
    Inventors: Leo M. F. Chirovsky, Ryan Likeke Naone, David Kisker, Stewart Feld
  • Publication number: 20050026311
    Abstract: A method and apparatus for burning in a semiconductor wafer having a plurality of active devices utilizes temporary conductive interconnect layers to separately couple at least a portion of the anodes of the active devices together as well as at least a portion of the cathodes of the devices together. A simplified probed pad, having a reduced number of contacts may then be utilized to apply a substantially constant voltage or current to the devices. The temporary conductive interconnect layer may be patterned to include device level resistors or array level resistors that may be used to mitigate the effects of short circuits or open circuits on the processing of the devices.
    Type: Application
    Filed: August 26, 2004
    Publication date: February 3, 2005
    Inventors: John Wasserbauer, Stewart Feld
  • Patent number: 6830940
    Abstract: A method and apparatus for burning in a semiconductor wafer having a plurality of active devices utilizes temporary conductive interconnect layers to separately couple at least a portion of the anodes of the active devices together as well as at least a portion of the cathodes of the devices together. A simplified probed pad, having a reduced number of contacts may then be utilized to apply a substantially constant voltage or current to the devices. The temporary conductive interconnect layer may be patterned to include device level resistors or array level resistors that may be used to mitigate the effects of short circuits or open circuits on the processing of the devices.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 14, 2004
    Assignee: Optical Communication Products, Inc.
    Inventors: John Wasserbauer, Stewart A. Feld
  • Publication number: 20040180460
    Abstract: A method of forming a vertical cavity surface emitting laser (100, 600, 900) includes process steps for self-aligning the p-type ohmic contact (118, 518, 932), an oxide current aperture (122, 926a), and a central puck of re-phase material (560a, 936) around the optical axis of the laser.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 16, 2004
    Inventors: Leo M. F. Chirovsky, Ryan Likeke Naone, David Kisker, Stewart Feld
  • Patent number: 6750071
    Abstract: A method of forming a vertical cavity surface emitting laser (100, 600, 900) includes process steps for self-aligning the p-type ohmic contact (118, 518, 932), an oxide current aperture (122, 926a), and a central puck of re-phase material (560a, 936) around the optical axis of the laser.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: June 15, 2004
    Assignee: Optical Communication Products, Inc.
    Inventors: Leo M. F. Chirovsky, Ryan Likeke Naone, David Kisker, Stewart Feld
  • Publication number: 20040058467
    Abstract: A method of forming a vertical cavity surface emitting laser (100, 600, 900) includes process steps for self-aligning the p-type ohmic contact (118, 518, 932), an oxide current aperture (122, 926a), and a central puck of re-phase material (560a, 936) around the optical axis of the laser.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 25, 2004
    Inventors: Leo M. F. Chirovsky, Ryan Likeke Naone, David Kisker, Stewart Feld
  • Patent number: 6266357
    Abstract: A three-dimensional waveguiding structure for a microcavity surface-emitting laser is described in which native aluminum oxide layers provide control of intracavity waveguiding and the laser optical mode structure of the emitted beam. Microcavity lasers described herein account for the blueshift of the emission wavelength as the laser lateral dimensions are reduced to or below the emission wavelength.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: July 24, 2001
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Stewart Feld, John P. Loehr, James A. Lott, Michael J. Noble