Demonstration of variable polarized coherent terahertz source

Shigeru Kashiwagi, Hirotoshi Saito, Fujio Hinode, Yuto Ishizuki, Ken Kanomata, Sadao Miura, Nozomu Morita, Toshiya Muto, Ikurou Nagasawa, Ken ichi Nanbu, Koutaro Shibata, Ken Takahashi, Kento Terada, Hiroki Yamada, Hiroyuki Hama, Heishun Zen, Akinori Irizawa

Research output: Contribution to journalArticlepeer-review

Abstract

We are developing an accelerator-based terahertz source that can produce arbitrary polarization states from a linearly polarized coherent undulator radiation (CUR). The polarization manipulation of the CUR can be realized using the Martin–Puplett interferometer employed as an optical phase shifter. This study also demonstrates a variable polarization manipulator by using the terahertz CUR (THz-CUR) source driven by a compact photocathode RF-gun at the Institute of Advanced Energy, Kyoto University. The vertically polarized CUR with a frequency of 0.16 THz was manipulated into a horizontal linear polarization or circular polarization, and Stokes parameters were measured to derive the degree of polarization.

Original languageEnglish
Article number103274
JournalInfrared Physics and Technology
Volume106
DOIs
Publication statusPublished - 2020 May

Keywords

  • Coherent radiation
  • Polarization
  • Short electron pulse
  • Terahertz wave

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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