Study on generation of variable polarized coherent THz radiation using a crossed undulator

Hirotoshi Saito, Hiroyuki Hama, Fujio Hinode, Ken Kanomata, Shigeru Kashiwagi, Sadao Miura, Toshiya Muto, Ikurou Nagasawa, Ken Ichi Nanbu, Shingo Ninomiya, Ken Takahashi

研究成果: Conference contribution

抄録

A variable polarized THz radiation source using a crossed undulator system has been developed at Tohoku University. In this scheme, two coherent undulator radiations from an extremely short electron bunch are used to control the polarization. They are linearly polarized radiations orthogonal to each other. Polarization of superimposed radiation is controlled by adjusting a relative phase between them. A compact planar undulator with seven periods has been designed for an experiment at our facility. The radiation frequency is 2.06 THz for electron beam energy of 22 MeV. The opening angle of the crossed undulator radiation was estimated to be 34 mrad (FWHM). Since the polarization state of the crossed undulator depends on observation angle, its angular dependence was evaluated. It was found that ideal polarization control is realized only in the angle range of 2.5 mrad, which is quite smaller than that of the radiation itself.

本文言語English
ホスト出版物のタイトルProceedings of the 29th Linear Accelerator Conference, LINAC 2018
出版社JACoW Publishing
ページ157-159
ページ数3
ISBN(電子版)9783954501946
DOI
出版ステータスPublished - 2020
イベント29th International Linear Accelerator Conference, LINAC 2018 - Beijing, China
継続期間: 2018 9 162018 9 21

出版物シリーズ

名前Proceedings of the 29th Linear Accelerator Conference, LINAC 2018

Conference

Conference29th International Linear Accelerator Conference, LINAC 2018
国/地域China
CityBeijing
Period18/9/1618/9/21

ASJC Scopus subject areas

  • 原子分子物理学および光学

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