Patents by Inventor Roger K. Richards

Roger K. Richards 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: 6762844
    Abstract: Systems and methods are described for an optical microscope using an interferometric source of multi-color, multi-beam entangled photons. A method includes: downconverting a beam of coherent energy to provide a beam of multi-color entangled photons; converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; transforming at least a portion of the converged multi-color entangled photon beam by interaction with a sample to generate an entangled photon specimen beam; and combining the entangled photon specimen beam with an entangled photon reference beam within a single beamsplitter.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: July 13, 2004
    Assignee: UT-Battelle, LLC
    Inventors: William B. Dress, Roger A. Kisner, Roger K. Richards
  • Patent number: 6744518
    Abstract: 53 Systems and methods are described for an interferometric source of multi-color, multi-beam entangled photons.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: June 1, 2004
    Assignee: UT-Battelle, LLC
    Inventors: William B. Dress, Roger A. Kisner, Roger K. Richards
  • Patent number: 6678054
    Abstract: Systems and methods are described for a quantum channel for the transmission of information.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: January 13, 2004
    Assignee: UT-Battelle, L.L.C.
    Inventors: William B. Dress, Roger A. Kisner, Roger K. Richards
  • Patent number: 6597487
    Abstract: An optical modulator includes a dielectric waveguide for receiving an optical beam and coupling energy of the optical beam into the waveguide. At least one Stark material is provided in the waveguide. A bias circuit generates a bias signal to produce an electrical field across the Stark material to shift at least one of the Stark absorption frequencies towards the frequency of the optical beam. A circuit for producing a time varying electric field across the Stark material modulates the optical beam. At least a portion of the bias field can be generated by an alternating bias signal, such as a square wave. A method of modulating optical signals includes the steps of providing a dielectric waveguide for receiving an optical beam and coupling energy of the optical beam into the waveguide, the waveguide having at least one Stark material disposed therein, and varying an electric field imposed across the Stark material.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: July 22, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Donald P. Hutchinson, Roger K. Richards
  • Patent number: 6597721
    Abstract: A micro-laser is disclosed which includes a waveguide, a first and a second subwavelength resonant grating in the waveguide, and at least one photonic band gap resonant structure (PBG) in the waveguide and at least one amplifying medium in the waveguide. PBG features are positioned between the first and second subwavelength resonant gratings and allow introduction of amplifying mediums into the highly resonant guided micro-laser microcavity. The micro-laser may be positioned on a die of a bulk substrate material with one or more electronic and optical devices and may be communicably connected to the same. A method for fabricating a micro-laser is disclosed. A method for tuning the micro-laser is also disclosed. The micro-laser may be used as an optical regenerator, or a light source for data transfer or for optical computing.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: July 22, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Donald P. Hutchinson, Roger K. Richards
  • Publication number: 20030098980
    Abstract: Systems and methods are described for an interferometric source of multi-color, multi-beam entangled photons. A method includes: downconverting a beam of coherent energy to provide a beam of multi-color entangled photons; converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometeric multi-color entangled photon beam; and combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam within a single beamsplitter.
    Type: Application
    Filed: August 24, 2001
    Publication date: May 29, 2003
    Applicant: UT-BATTELLE, L.L.C.
    Inventors: William B. Dress, Roger A. Kisner, Roger K. Richards
  • Publication number: 20030098979
    Abstract: Systems and methods are described for an optical microscope using an interferometric source of multi-color, multi-beam entangled photons. A method includes: downconverting a beam of coherent energy to provide a beam of multi-color entangled photons; converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; transforming at least a portion of the converged multi-color entangled photon beam by interaction with a sample to generate an entangle photon specimen beam; and combining the entangled photon specimen beam with an entangled photon reference beam within a single beamsplitter.
    Type: Application
    Filed: August 24, 2001
    Publication date: May 29, 2003
    Inventors: William B. Dress, Roger A. Kisner, Roger K. Richards
  • Publication number: 20030086633
    Abstract: An optical modulator includes a dielectric waveguide for receiving an optical beam and coupling energy of the optical beam into the waveguide. At least one Stark material is provided in the waveguide. A bias circuit generates a bias signal to produce an electrical field across the Stark material to shift at least one of the Stark absorption frequencies towards the frequency of the optical beam. A circuit for producing a time varying electric field across the Stark material modulates the optical beam. At least a portion of the bias field can be generated by an alternating bias signal, such as a square wave. A method of modulating optical signals includes the steps of providing a dielectric waveguide for receiving an optical beam and coupling energy of the optical beam into the waveguide, the waveguide having at least one Stark material disposed therein, and varying an electric field imposed across the Stark material.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 8, 2003
    Inventors: Donald P. Hutchinson, Roger K. Richards
  • Patent number: 6552842
    Abstract: A reflective coherent spatial light modulator (RCSLM) includes a subwavelength resonant grating structure (SWS), the SWS including at least one subwavelength resonant grating layer (SWL) have a plurality of areas defining a plurality of pixels. Each pixel represents an area capable of individual control of its reflective response. A structure for modulating the resonant reflective response of at least one pixel is provided. The structure for modulating can include at least one electro-optic layer in optical contact with the SWS. The RCSLM is scalable in both pixel size and wavelength. A method for forming a RCSLM includes the steps of selecting a waveguide material and forming a SWS in the waveguide material, the SWS formed from at least one SWL, the SWL having a plurality of areas defining a plurality of pixels.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: April 22, 2003
    Assignee: UT-Battelle, LLC
    Inventors: John T. Simpson, Roger K. Richards, Donald P. Hutchinson, Marcus L. Simpson
  • Publication number: 20020149584
    Abstract: A reflective coherent spatial light modulator (RCSLM) includes a subwavelength resonant grating structure (SWS), the SWS including at least one subwavelength resonant grating layer (SWL) have a plurality of areas defining a plurality of pixels. Each pixel represents an area capable of individual control of its reflective response. A structure for modulating the resonant reflective response of at least one pixel is provided. The structure for modulating can include at least one electro-optic layer in optical contact with the SWS. The RCSLM is scalable in both pixel size and wavelength. A method for forming a RCSLM includes the steps of selecting a waveguide material and forming a SWS in the waveguide material, the SWS formed from at least one SWL, the SWL having a plurality of areas defining a plurality of pixels.
    Type: Application
    Filed: April 13, 2001
    Publication date: October 17, 2002
    Inventors: John T. Simpson, Roger K. Richards, Donald P. Hutchinson, Marcus L. Simpson