Method of accelerating photons by a relativistic plasma wave

Details Method of accelerating photons by a relativistic plasma wave Method of accelerating photons by a relativistic plasma wave

1988-09-14

1990-06-26

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

328233, H01J 746, H01S 309

Patent

active

049375326

ABSTRACT:
Photons of a laser pulse have their group velocity accelerated in a plasma as they are placed on a downward density gradient of a plasma wave of which the phase velocity nearly matches the group velocity of the photons. This acceleration results in a frequency upshift. If the unperturbed plasma has a slight density gradient in the direction of propagation, the photon frequencies can be continuously upshifted to significantly greater values.

REFERENCES:
patent: 3911318 (1975-10-01), Spero et al.
patent: 4110595 (1978-08-01), Brambilla et al.
patent: 4263095 (1981-04-01), Thode
Wilks et al., "Frequency Up-Conversion . . . Overdense Plasma" Phys. Re. Lett., vol. 61, #3, pp. 337-340, 7/18/88, abst. Provided.
Tajima et al., "An Electro Accelerator Using a Laser", IEEE Trans, Nucl. Sci, Proc. 1979, PA Conf., vol. 26, #3, Pt-2, pp. 4188-4189, abst.
Joshi et al., "Vetrahigh Gradient . . . Plasma Density Waves", Nature, vol. 311, No. 5986, pp. 525-529, 10/11/84, abst. Provided.

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