Patents by Inventor Robert S. Stoneman

Robert S. Stoneman 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).

  • Intracavity-pumped 2.1 .mu.m Ho.sup.3+ :YAG laser
    Patent number: 5289482
    Abstract: In a preferred embodiment, a Tm.sup.3+ :YAG laser crystal and a Ho.sup.3+ :YAG laser crystal are placed within a reflective path of a laser cavity for intracavity pumping the Ho.sup.3+ :YAG laser crystal. The Tm.sup.3+ :YAG laser crystal emits a substantially 2.0 .mu.m laser emission after being resonantly end-pumped by a pump beam at a wavelength of about 785 nm and the substantially 2.0 .mu.m laser emission is used to pump the Ho.sup.3+ :YAG laser crystal. The intracavity-pumped Ho.sup.3+ :YAG laser crystal emits an output laser emission at substantially 2.1 .mu.m. The slope efficiency of the Ho.sup.3+ :YAG laser crystal output power is about 40% of the pump power absorbed by the Tm.sup.3+ :YAG laser crystal.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: February 22, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Leon Esterowitz, Robert S. Stoneman