Apparatus and methods for generating and enhancing Smith-Purcell radiation

US10505334B2 · kind B2 · utility

Assignee

• Massachusetts Institute of Technology · US

Inventors

• Yi Yang · Cambridge, US
• Aviram Massuda · Cambridge, US
• Charles Roques-Carmes · Cambridge, US
• Nicholas H. Rivera · Cambridge, US
• Tena Dubcek · Cambridge, US
• John D. Joannopoulos · Belmont, US
• Karl K. Berggren · Arlington, US
• Ido Kaminer · Haifa, IL
• Marin Soljacic · Belmont, US
• Yujia Yang · Jinzhong City, CN
• Steven Kooi · Lexington, US
• Phillip Donald Keathley · Natick, US

Key dates

• Filing date: Apr 3, 2018
• Grant date: Dec 10, 2019
• Expiry date: Apr 3, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/08009
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

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.