Results 121 to 130 of about 3,826 (299)
Advanced Science, EarlyView.A multifunctional terahertz (THz) platform is demonstrated, in a model material Fe4Nb2O9, exhibiting a large intrinsic THz phase shift alongside distinct THz magnon excitations in its antiferromagnetic phase. This coexistence of phase modulation and spin dynamics offers a promising pathway toward integrated THz communication and magnonic computation ...
Brijesh Singh Mehra +10 more
wiley +1 more source
Broadband Single-Nanowire Photoconductive Terahertz Detectors
, 2017 Broadband photoconductive terahertz detectors based on undoped InP single nanowires were demonstrated. By further design and growth of an axial n+-i-n+ structure to reduce the contact resistance, highly-sensitive n+-i-n+ InP single-nanowire terahertz ...
Fu, Lan +11 more
core
Improved active sub-terahertz imaging system for parcel inspection
Journal of the European Optical Society-Rapid PublicationsTerahertz radiation has emerged as a prominent solution for imaging and detection beyond visible and infrared. Active terahertz imaging is a widely used technology in this context especially for security applications and screening. Such systems are built
Boutemedjet Ayoub +3 more
doaj +1 more source
Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters
Advanced Science, EarlyView.This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang +10 more
wiley +1 more source
Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review
Advanced Science, EarlyView.Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh +8 more
wiley +1 more source
Large Temperature‐invariant Anomalous Nernst Effect in Non‐collinear Antiferromagnet Mn3Pt
Advanced Science, EarlyView.Based on the noncollinear antiferromagnetic Mn3Pt thin films, the composition‐tunable Mn‐3d orbital states directly govern the Berry curvature. As a result, a giant and temperature‐invariant anomalous Nernst coefficient of 0.71 µV/K is achieved under Mn‐rich conditions.
Pengwei Gong +16 more
wiley +1 more source
Imaging with Undetected Photons in the Terahertz Frequency Range
Generation and Detection of terahertz radiation still remain a technological challenge, especially when compared to the visible or near infrared spectral range.
Molter, Daniel +3 more
core +1 more source
Pushing semiconductor detectors into the terahertz gap
, 2006 An electromagnetic wave that penetrates clothing could be very useful in looking for concealed weapons and other objects. Terahertz waves offer such a possibility and a US university project is looking to develop a range of semiconductor detectors with ...
Cooke, Mike
core +1 more source
Extreme‐Thickness Meta‐Membrane for Controlling Terahertz Vectorial Beams
Advanced Science, EarlyView.We propose ultra‐thin (λ/30) transmissive terahertz metasurfaces combining near‐field resonant and detour phases in coupled‐slit meta‐atoms, enabling continuous phase and polarization control beyond conventional designs. Based on leaky‐mode theory, scalar and vectorial terahertz Bessel beams at 0.39 THz are experimentally demonstrated, with ...
Yufei Song +7 more
wiley +1 more source
Plasma waves in nanotransistors working as terahertz detectors and emittors
, 2008 Plasma waves in nanotransistors working as terahertz detectors and ...
Knap, Wojciech
core +1 more source