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:
Jan. 19, 2010
Filed:
Dec. 07, 2007
Alexei V. Smirnov, Rancho Palos Verdes, CA (US);
David U. L. Yu, Rancho Palos Verdes, CA (US);
Alexei V. Smirnov, Rancho Palos Verdes, CA (US);
David U. L. Yu, Rancho Palos Verdes, CA (US);
Abstract
A sub-mm wave source based on Cherenkov resonant radiation of a microbunched electron beam radiating coherently in a dielectric-loaded pipe. The microbunched electron beam is produced in a pulse photoinjector by illuminating a metal photocathode with sub-ps or multi-ps intensity-modulated laser beam with a beat wave or multiplexing at terahertz frequencies, the photoelectrons generated at the photocathode being accelerated by an electric field and sub-wavelength focused by magnetic field to propagate through a resonant radiator comprising a corrugated wall or smooth-wall metal capillary pipe internally coated with dielectric and attached to an antenna.