Patents by Inventor Dirk Sodtke

Dirk Sodtke 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).

  • Method for determining at least one beam propagation parameter of a laser beam
    Patent number: 11243114
    Abstract: The invention relates to a method for determining at least one beam propagation parameter (M2, w0, ?, z0) of a laser beam, comprising: directing the laser beam through a lens arrangement towards a spatially resolving detector, imaging the laser beam at a plurality of different focus positions (F1, . . . ) relative to the spatially resolving detector by adjusting a focal length (f1, . . . ) of the lens arrangement, and determining the at least one beam propagation parameter (M2, w0, ?, z0) by evaluating an intensity distribution (l(x,y)) of the laser beam on the spatially resolving detector at the plurality of different focus positions (F1, . . . ). The method comprises adjusting the focal length (f1, . . . ) of the lens arrangement by arranging lens elements (A1, . . . ; B1, . . . ) having different focal lengths (fA1, . . . ; fB1, . . . ) in a beam path of the laser beam.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: February 8, 2022
    Assignee: TRUMPF Lasersystems for Semiconductor Manufacturing GmbH
    Inventors: Viktor Granson, Jonathan Mueller, Dirk Sodtke
  • METHOD FOR DETERMINING AT LEAST ONE BEAM PROPAGATION PARAMETER OF A LASER BEAM
    Publication number: 20200088570
    Abstract: The invention relates to a method for determining at least one beam propagation parameter (M2, w0, ?, Z0) of a laser beam, comprising: directing the laser beam through a lens arrangement towards a spatially resolving detector, imaging the laser beam at a plurality of different focus positions (F1, . . . ) relative to the spatially resolving detector by adjusting a focal length (f1, . . . ) of the lens arrangement, and determining the at least one beam propagation parameter (M2, w0, ?, Z0) by evaluating an intensity distribution (l(x,y)) of the laser beam on the spatially resolving detector at the plurality of different focus positions (F1, . . . ). The method comprises adjusting the focal length (f1, . . . ) of the lens arrangement by arranging lens elements (A1, . . . ; B1, . . . ) having different focal lengths (fA1, . . . ; fB1, . . . ) in a beam path of the laser beam.
    Type: Application
    Filed: September 17, 2018
    Publication date: March 19, 2020
    Inventors: Viktor Granson, Jonathan Mueller, Dirk Sodtke