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:
Dec. 10, 2019
Filed:
Apr. 03, 2018
Massachusetts Institute of Technology, Cambridge, MA (US);
Yi Yang, Cambridge, MA (US);
Aviram Massuda, Cambridge, MA (US);
Charles Roques-Carmes, Cambridge, MA (US);
Nicholas H. Rivera, Cambridge, MA (US);
Tena Dubcek, Cambridge, MA (US);
John D. Joannopoulos, Belmont, MA (US);
Karl Kimon Berggren, Arlington, MA (US);
Ido E. Kaminer, Cambridge, MA (US);
Marin Soljacic, Belmont, MA (US);
Yujia Yang, Jinzhong, CN;
Steven E. Kooi, Lexington, MA (US);
Phillip Donald Keathley, Natick, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
An apparatus for generating Smith-Purcell radiation having at least one spectral component at a wavelength λ includes a periodic structure including a dielectric material and an electron source, in electromagnetic communication with the periodic structure, to emit an electron beam propagating within about 5λ from a surface of the periodic structure to induce emission of the Smith-Purcell radiation. The electron beam has an electron energy tunable between about 0.5 keV and about 40 keV so as to change a wavelength of the Smith-Purcell radiation.