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Title: Method of accelerating photons by a relativistic plasma wave

Patent ·
OSTI ID:867437

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.

Research Organization:
Univ. of California (United States)
DOE Contract Number:
FG03-87ER13752
Assignee:
Regents of University of California (Berkeley, CA)
Patent Number(s):
US 4937532
OSTI ID:
867437
Country of Publication:
United States
Language:
English