Electronic-Spintronic Terahertz Emitter

Abstract

In terahertz science and technology, developing radiation sources is extremely important. Progress here is held back because traditional electronic or photonic technologies are not efficient enough in the THz frequency regime. This study presents an electronic-spintronic THz emitter (E-STE), which combines the principles of spintronics and vacuum electronics and emits continuous, monochromatic THz radiation from a compact structure. This E-STE can cover the entire THz frequency range at relatively low voltage and current, providing relatively high radiation power density and working efficiency. Such devices may have far-reaching impact on the development of chip-integrated THz sources.