Patents by Inventor N. James Terrell, Jr.

N. James Terrell, Jr. 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 and apparatus for reducing diffraction-induced damage in high power laser amplifier systems
    Patent number: 3935545
    Abstract: Self-focusing damage caused by diffraction in laser amplifier systems may be minimized by appropriately tailoring the input optical beam profile by passing the beam through an aperture having a uniform high optical transmission within a particular radius r.sub.o and a transmission which drops gradually to a low value at greater radii. Apertures having the desired transmission characteristics may readily be manufactured by exposing high resolution photographic films and plates to a diffuse, disk-shaped light source and mask arrangement.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: January 27, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Anthony J. Campillo, Brian E. Newnam, Stanley L. Shapiro, N. James Terrell, Jr.