Ultrabroadband single-cycle terahertz pulses with peak fields of 300 kV cm${}^{-1}$ from a metallic spintronic emitter

T. Seifert, S. Jaiswal, M. Sajadi +5

To explore the capabilities of metallic spintronic thin-film stacks as a source of intense and broadband terahertz electromagnetic fields, we excite a W/CoFeB/Pt trilayer on a larg…