Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1989-06-14
1990-12-04
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
350353, H01S 300, H03F 700
Patent
active
049756559
ABSTRACT:
Photons of an electromagnetic source wave are frequency-upshifted as a plasma is rapidly created around the path of this propagating source wave. The final frequency can be controlled by adjusting the gas density. A controlled time-varying frequency (chirped) pulse can be produced by using a controlled spatially varying gas density. The plasma must be created in a time which is short compared to the transit time of the light through the plasmas region. For very fast creation over one to at most a few light periods of an overdense plasma, static magnetic fields with short wavelengths are created.
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Lange et al.; "Submillimeter Wave Production . . . "; N&IS AD-A037613/7, NRL; 3/77, pp. 1-15, abst.
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Dawson John M.
Joshi Chandrasekhar J.
Mori Warren B.
Sessler Andrew M.
Wilks Scott C.
Moskowitz Nelson
Regents of the University of California
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