The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1990
Filed:
Sep. 14, 1988
Applicant:
Inventors:
John M Dawson, Pacific Palisades, CA (US);
Scott C Wilks, Santa Monica, CA (US);
Assignee:
The Regents of the University of California, Berkeley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01S / ;
U.S. Cl.
CPC ...
330-43 ; 328233 ;
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.