Patents by Inventor Deborah A. Alterman

Deborah A. Alterman 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).

  • System and method for unstable-resonator optically pumped semiconductor lasers
    Patent number: 8027818
    Abstract: Apparatus and method for designing and operating a solid-state laser that compensates for thermal lensing such that lasing instability is maintained at high pumping power. In some embodiments, the laser is an optically pumped semiconductor laser (OPSL). In some embodiments, a concave end facet is formed on the OPSL that at least compensates for thermal lensing at high pump power. In some embodiments, an external mirror is used for at least one end of the OPSL, wherein the external mirror at least compensates for thermal lensing at high pump power.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: September 27, 2011
    Assignee: Lockheed Martin Corporation
    Inventors: Deborah A. Alterman, Dawn M. Meekhof, Dennis D. Lowenthal, Ananda K. Cousins
  • High-energy eye-safe pulsed fiber amplifiers and sources operating in erbium's L-band
    Patent number: 7872794
    Abstract: An apparatus and that provide an optical-fiber amplifier having at least one erbium-doped fiber section and an optical pump coupled to the erbium-doped fiber section, wherein the apparatus is operable to amplify signal pulses to high energy in the erbium-doped fiber section, the pulses having a wavelength in the range of about 1565 nm to about 1630 nm. In some embodiments, the amplifying fiber is ytterbium free.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: January 18, 2011
    Assignee: Lockheed Martin Corporation
    Inventors: John D. Minelly, Deborah A. Alterman