Quasi-monochromatic THz pulse generation using Cherenkov radiation from a spatially modulated electron beam

Y. Tadenuma, T. Murakami, M. Brameld, M. Washio, K. Sakaue, R. Kuroda, Y. Taira*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Cherenkov radiation forms a wave front in a direction that depends on the density of the medium and the velocity of charged particles; therefore, ordinary electron bunches do not generate coherent radiation unless they are sufficiently compressed. In this work, we present the generation of a quasi-monochromatic THz pulse using an electron bunch with a periodic structure generated from a small rf gun. A coherent THz pulse was generated by matching the tilt angle of the electron bunch and Cherenkov radiation angle with a rf deflector. Furthermore, we attempted to render the THz pulse quasi-monochromatic by adding a periodic structure to the electron bunch using a multi-slit. Finally, using several band-pass filters, we successfully confirmed that the quasi-monochromatic operation was performed at frequencies of 0.2 and 0.3 THz.

本文言語English
論文番号C04016
ジャーナルJournal of Instrumentation
15
4
DOI
出版ステータスPublished - 2020 4月

ASJC Scopus subject areas

  • 数理物理学
  • 器械工学

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