Patents Assigned to Melles Griot, San Marcos Company
  • Apparatus and method for suppressing diffraction rings in a laser
    Patent number: 4873693
    Abstract: A laser comprises an interaction region formed by a wall surface of a capillary discharge tube which has been roughened along a continuous length thereof. This roughened surface suppresses and substantially eliminates diffraction rings in lasers.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: October 10, 1989
    Assignee: Melles Griot San Marcos Company
    Inventor: Benjamin H. Cook, Jr.
  • Apparatus and method for suppressing diffraction rings in a laser
    Patent number: 4827484
    Abstract: A laser comprises an interaction region formed by a wall surface of a capillary discharge tube which has been roughened along a continuous length thereof. This roughened surface suppresses and substantially eliminates diffraction rings in lasers.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: May 2, 1989
    Assignee: Melles Griot San Marcos Company
    Inventor: Benjamin H. Cook, Jr.
  • Compact gas laser having extended life
    Patent number: 4649545
    Abstract: A compact, extended life, gas laser comprises a capillary tube with a transition portion having a reduced wall thickness. The laser includes a cathode which is cylindrical in a rearward cathode region and hemispherical in a forward cathode region. The configuration of the capillary tube and the cathode cooperate to inhibit short circuiting of the bore to cathode discharge path and thereby extend the life of the laser.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: March 10, 1987
    Assignee: Melles Griot, San Marcos Company
    Inventors: Wei-long W. Lee, Michael J. Dorich, Jeff W. Eerkens