We report an approach in time-domain terahertz (THz) spectroscopy for measuring the dielectric response of liquids based on inherent properties spintronic THz emitters (STEs). The electric field radiated from STE is inversely proportional to sum complex refractive indices media surrounding thin metallic stack and stack's conductivity. demonstrate that by bringing a liquid contact with emitter, ...

Coherent excitation and control of lattice motion by electromagnetic radiation in optical frequency range has been reported through variety of indirect interaction mechanisms with phonon modes. However, coherent phonon excitation by direct interaction of electromagnetic radiation and nuclei has not been demonstrated experimentally in terahertz (THz) frequency range mainly due to the lack of THz...

THz polarization control upon generation is a crucially missing functionality. spintronic emitters based on the inverse spin Hall effect (ISHE) allow for this by strict implicit orthogonality between their magnetization state and emitted polarization. This was until now only demonstrated using cumbersome external magnetic field biasing to impose direction. We present here an efficient voltage o...

Development of future sensor, memory, and computing nanodevices based on novel physical concepts is one the significant research endeavors in solid-state research. The field spintronics such promising area nanoelectronics which utilizes both charge spin an electron for device operations. advantage offered by systems their non-volatility low-power functionality. This paper reviews emerging spint...

A compact cryogenic terahertz emitter is highly desired for applications in astronomy with a broad frequency range of emissions and relatively high emission power. In this paper, we report on based Bi2Sr2CaCu2O8 + δ (BSCCO) intrinsic Josephson junctions, from 0.15 to 1.01 THz. The square gold-BSCCO-gold mesa sapphire substrate fabricated by simple efficient method. highest power 5.62 μW at 0.35...

We explore the terahertz (THz) emission from CoFeB/Pt spintronic structures in below-magnetic-saturation regime and reveal an orientation dependence emission, arising in-plane uniaxial magnetic anisotropy (UMA) ferromagnetic layer. Maximizing UMA during film deposition process aligning applied field with easy axis of structure allow THz to reach saturation under weaker fields. In addition, ampl...

Terahertz (THz) waves have attracted attention as carrier for next-generation wireless communications (6G). Electronic THz emitters are widely used in current mobile communications; however, they may face technical limitations 6G with upper-frequency limits. We demonstrate communication a 560-GHz band by using photonic emitter based on photomixing of 560-GHz-spacing soliton microcomb uni-travel...

Spintronic terahertz emitters (STEs) are desirable broadband sources, but their limited signal strength has hindered practical application. By optimizing the photonic and thermal environment, authors present an STE that could overcome this obstacle. Benchmarking against state-of-the-art based on optical rectification, delivers strong pulses with comparable peak electric field fluence, offers ad...