Patents Represented by Attorney John S. Schipper

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  • Free electron laser designs for laser amplification
    Patent number: 4506229
    Abstract: Method for laser beam amplification by means of free electron laser techniques. With wiggler magnetic field strength B.sub.w and wavelength .lambda..sub.w =2.pi./k.sub.w regarded as variable parameters, the method(s) impose conditions such as substantial constancy of B.sub.w /k.sub.w or k.sub.w or B.sub.w and k.sub.w (alternating), coupled with a choice of either constant resonant phase angle or programmed phase space "bucket" area.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: March 19, 1985
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Donald Prosnitz, Abraham Szoke
  • Multifrequency, single pass free electron laser
    Patent number: 4500843
    Abstract: A method for simultaneous amplification of laser beams with a sequence of frequencies in a single pass, using a relativistic beam of electrons grouped in a sequence of energies corresponding to the sequence of laser beam frequencies. The method allows electrons to pass from one potential well or "bucket" to another adjacent bucket, thus increasing efficiency of trapping and energy conversion.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: February 19, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Abraham Szoke, Donald Prosnitz