[16a-P05-1~16] 3.8 Terahertz technologies

[16a-P05-3] Tunable Polarization Emitter in Terahertz Region Using Spintronic Devices

Katsuyuki Ishi-i¹, 〇HIDEAKI KITAHARA¹, Takashi Furuya¹, Mary Clare Escano¹, Masahiko Tani¹, Dmitry Bulgarevich², Dongfeng He², Makoto Watanabe² (1.Univ. of Fukui, 2.NIMS)

Keywords:

Spintronics,Terahertz

The intensity and polarization characteristics of terahertz (THz) wave radiation from a spintronic element depend on the strength and direction of the applied magnetic field. Therefore, by varying the magnetic field orientation at the radiation point on the element using a composite magnetic field created by an electromagnet and a permanent magnet, it is possible to realize a radiation element that can continuously tune the polarization of the emitted THz wave. In this study, we report on the fabrication of a polarization-tunable radiation element and its polarization tuning characteristics.