Patents by Inventor Phillip Sprangle

Phillip Sprangle 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).

  • Patent number: 7700929
    Abstract: A system for detecting atmospheric contamination, the system comprising a laser operable to generate an infrared light beam comprising a longitudinal component and a transverse component, the laser remote from the atmospheric contamination, and a processor operable to process a flouresence resulting from contact between the atmospheric contamination and an ultraviolet light being generated from the longitudinal and transverse components of the infrared light of the laser, wherein the processor determines the identity of the fluorescence by comparing the fluorescence to known fluorescence.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: April 20, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Antonio Ting, Ilya Alexeev, Phillip Sprangle, Richard Hubbard, Glenn Rubel, Eldridge Briscoe, Christopher Moore
  • Publication number: 20060096802
    Abstract: A method for generating an acoustic source in a liquid includes transmitting an optical pulse through the liquid so the optical pulse reaches ILIB through pulse compression and ionizes a liquid volume. The pulse compression is achieved through at least one of a) group velocity dispersion induced longitudinal compression of a frequency chirped optical pulse and b) transverse self focusing via a nonlinear optical Kerr effect. The acoustic source can be generated at a controllable remote location many meters from the optical source. The optical source can be a laser or other suitable optical device.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 11, 2006
    Inventors: Theodore Jones, Antonio Ting, Phillip Sprangle, Leonard Bibee, Joseph Penano
  • Patent number: 6137811
    Abstract: A system is disclosed for developing a conditioned electron beam of high quality for an exemplary application to a free-electron source of coherent radiation. The system comprises: a source for producing an electron beam of relatively high energy, a microwave source for generating a microwave field, and a wiggler for generating transverse to the electron beam a periodic magnetic field which cooperates with the microwave field to interact with the electron beam and develop a conditioned electron beam of high quality.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: October 24, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Phillip Sprangle, Bahman Hafizi, Glenn Joyce, Philip Serafim
  • Patent number: 5892810
    Abstract: An x-ray lithography device in which a beam of electrons interacts with a microwave field of a quasi-optical maser such as a quasi-optical gyrotron. This maser comprises a pair of spaced mirrors defining a quasi-optical cavity therebetween, with one mirror being provided with an orifice to permit extraction of the x-ray beam produced. A Bragg reflector is connected to the mirror orifice to reduce the microwave power loss from the device through the orifice. Electrons injected in the maser cavity are caused to "wiggle" by the interacting microwave field, which functions as an undulator, so as to produce a non-coherent x-ray beam that travels along the longitudinal axis of the cavity and exits through the mirror orifice.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: April 6, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Phillip Sprangle, Bahman Hafizi, Frederick Mako
  • Patent number: 4481475
    Abstract: A betatron for accelerating charged particles in a toroidal vacuum chamber comprisinga betatron magnetic field generator;a toroidal magnetic field generator;a generating circuit for generating a charged particle beam into the toroidal chamber with an energy and current such that the ratio of the Budker parameter .nu. to the relativistic factor .gamma. of the beam in the range .nu./.gamma.=0.005 to 0.
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: November 6, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christos A. Kapetanakos, Phillip Sprangle
  • Patent number: 4224576
    Abstract: An apparatus for amplifying coherent radiation at millimeter and submillimeter wavelengths includes the combination of a travelling-wave-tube cyclotron-maser-amplifier structure and a magnetron-injection electron gun. The amplifier structure includes a fast-wave drift tube and an electromagnetic wave launcher within the bore of a superconducting magnet. The magnetron-injection electron gun is also within the bore of the magnet and is coupled to the drift tube. As a travelling wave is launched in a preferred mode in the drift tube, the electron gun injects an annular beam of relativistic electrons having both large energy transverse to the axis of the device and small energy spread into the drift tube so that the electrons gyrate at their cyclotron frequency in orbits about the lines of the axial magnetic field produced by the magnet. The travelling wave is amplified by extracting energy from the relativistic electron beam.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: September 23, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Victor L. Granatstein, Phillip Sprangle, Adam T. Drobot, Kwo R. Chu, J. Laurence Safter