Zejun Ren
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View article: AI enhanced strong-field terahertz spectral detection and imaging
AI enhanced strong-field terahertz spectral detection and imaging Open
Terahertz (THz) waves demonstrate advantages including broad absolute bandwidth, low photon energy, and superior penetration capability, showing significant potential in nondestructive testing and spectroscopic imaging applications. Howeve…
View article: One-dimensional photonic crystal structure enhanced external-magnetic-field-free spintronic terahertz high-field emitter
One-dimensional photonic crystal structure enhanced external-magnetic-field-free spintronic terahertz high-field emitter Open
Intense terahertz (THz) radiation in free space offers multifaceted capabilities for accelerating electron, understanding the mesoscale architecture in (bio)materials, elementary excitation and so on. Recently popularized spintronic THz em…
View article: Terahertz generation via the inverse orbital Rashba-Edelstein effect at the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">Ni</mml:mi><mml:mtext>/</mml:mtext><mml:mi>Cu</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math> interface
Terahertz generation via the inverse orbital Rashba-Edelstein effect at the interface Open
Orbitronics provides novel mechanisms to generate terahertz (THz) emission using the orbital angular momentum of electrons. Here, we report a systematic investigation of the THz emission from Ni/CuOx heterostructures pumped by a femtosecon…
View article: Nanoscale ultrafast dynamics in Bi2Te3 thin film by terahertz scanning near-field nanoscopy
Nanoscale ultrafast dynamics in Bi2Te3 thin film by terahertz scanning near-field nanoscopy Open
Ultrafast laser interactions with topological insulators (TIs) have garnered tremendous interest for understanding light-matter interactions and developing optoelectronic devices across visible to terahertz (THz) regions owning to their hi…
View article: One-dimensional Photonic Crystal Structure Enhanced External-Magnetic-Field-Free Spintronic Terahertz High-Field Emitter
One-dimensional Photonic Crystal Structure Enhanced External-Magnetic-Field-Free Spintronic Terahertz High-Field Emitter Open
Intense terahertz (THz) radiation in free space offers multifaceted capabilities for accelerating electron, understanding the mesoscale architecture in (bio)materials, elementary excitation and so on. Recently popularized spintronic THz em…
View article: Spintronic terahertz metasurface emission characterized by scanning near-field nanoscopy
Spintronic terahertz metasurface emission characterized by scanning near-field nanoscopy Open
Understanding the ultrafast excitation, detection, transportation, and manipulation of nanoscale spin dynamics in the terahertz (THz) frequency range is critical to developing spintronic THz optoelectronic nanodevices. However, the diffrac…
View article: External-Magnetic-Field-Free Spintronic Terahertz Strong-Field Emitter
External-Magnetic-Field-Free Spintronic Terahertz Strong-Field Emitter Open
Intense terahertz (THz) radiation in free space has immense potential for regulating material state, accelerating electrons, producing biological effects, and so on. However, the high cost and challenges involved in constructing strong-fie…
View article: Terahertz spin currents in nanoscale spatial resolution
Terahertz spin currents in nanoscale spatial resolution Open
The ability to generate, detect, and control coherent terahertz (THz) spin currents with femtosecond temporal and nanoscale spatial resolution has significant ramifications. The diffraction limit of concentrated THz radiation, which has a …