Patents by Inventor Andrei Yu Naumov

Andrei Yu Naumov 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).

  • Methods for creating optical structures in dielectrics using controlled energy deposition
    Patent number: 6884960
    Abstract: The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: April 26, 2005
    Assignee: National Research Council of Canada
    Inventors: Orson Bourne, David Rayner, Paul Corkum, Manjusha Mehendale, Andrei Yu Naumov
  • Methods for creating optical structures in dielectrics using controlled energy deposition
    Publication number: 20040094527
    Abstract: The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.
    Type: Application
    Filed: June 16, 2003
    Publication date: May 20, 2004
    Inventors: Orson Bourne, David Rayner, Paul Corkum, Manjusha Mehendale, Andrei Yu Naumov