Patents by Inventor Charles R. Tallman

Charles R. Tallman 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).

  • Pulsed infrared difference frequency generation in CdGeAs.sub.2
    Patent number: 4011462
    Abstract: The disclosure relates to a laser apparatus for generating a line-tunable pulsed infrared difference frequency output. The apparatus comprises a CO.sub.2 laser which produces a first frequency, a CO laser which produces a second frequency and a mixer for combining the output of the CO.sub.2 and CO lasers so as to produce a final output comprising a difference frequency from the first and second frequency outputs.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: March 8, 1977
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Martin S. Piltch, John P. Rink, Charles R. Tallman