Results 71 to 80 of about 81,306 (310)
Terahertz Pulse Shaping using Microwave-Photonic Delay Line Filters
, 2021 We propose an all-optical multi-band raised-cosine filter with tunable bandwidth for multi-channel IEEE 802.15.3d Standard-compliant terahertz communications using only a single-tap microwave photonic filter.Mohamed Shehata, Ke Wang, Withawat ...
Ke Wang +5 more
core +1 more source
Localized Ion Irradiation Enables Topography‐Free High‐Tc Superconducting Metamaterials
Advanced Optical Materials, EarlyView.A topography‐free oxygen ion‐irradiation strategy is demonstrated for patterning superconducting YBCO terahertz metamaterials without physical material removal. The approach preserves film integrity while enabling large spectral tunability, ultrafast optical modulation, and dual‐band resonance control, providing a scalable platform for low‐loss ...
Teng Chen Ietro Pang +5 more
wiley +1 more source
Seven‐Fold Compression of Mid‐Infrared Pulses Using a Series of Titanium Dioxide Plates
Advanced Optical Materials, EarlyView.Here, a sequence of three titanium dioxide plates is used to compress a mid‐infrared pulse from 103.9 femtoseconds to 14.1 femtoseconds (about two optical cycles) without the use of external dispersion compensation. The approach maintains high efficiency and produces pulses with a stable carrier‐envelope phase, providing a compact platform for ...
André M. Côté +4 more
wiley +1 more source
Graphene plasmons-enhanced terahertz response assisted by metallic gratings
Nanophotonics, 2022 Terahertz detectors based on two-dimensional Dirac materials offer a new approach for room-temperature terahertz detection with high response and low noise.
Yu Anqi +9 more
doaj +1 more source
Terahertz Non-Destructive Testing and Imaging of High-Voltage Cables
Frontiers in Physics, 2022 The evaluation of the internal defects in high-voltage cross-linked polyethylene cables is highly crucial for the security and reliability of power transmission.
Zhang Zhenwei +8 more
doaj +1 more source
Power scaling of ultra-thin terahertz beam-splitters
, 2012 Extent: 2p.A low-cost ultra-thin broadband terahertz beam-splitter based on a thin conductive layer has previously been fabricated and tested. Here, this paper shows the linearity of power scaling of the beam-splitter from lower to higher power in ...
Ng, B. +11 more
core +1 more source
Near‐Field Nanoimaging of Programmable Phase Transitions in Ga+‐Irradiated VO2
Advanced Optical Materials, EarlyView.Focused Ga+ ion irradiation locally reprograms the insulator‐to‐metal transition in VO2 thin films. Infrared and terahertz near‐field nanoimaging reveals that low irradiation doses localize the resistive‐switching filament within the defect region, while high doses suppress switching there and redirect the filament into pristine VO2.
Sarabpreet Singh +5 more
wiley +1 more source
Terahertz magnetic plasmon waveguides
, 2012 Extent: 2p.A design of subwavelength terahertz waveguides is presented in this manuscript. The structure is composed of a linear chain of split-ring resonators (SRRs), i.e., artificial magnetic atoms. The energy transport along the chain can be described
Markus Walther +11 more
core +1 more source
Advanced Optical Materials, EarlyView.The importance of photovoltaics (PV) and optoelectronics based on new Earth‐abundant materials is increasing with the ever‐growing energy demand and the need to address it with sustainable material technology. The paper demonstrates good quality magnetron sputter epitaxy of the inexpensive and eco‐friendly semiconductor MgSnN2 for green gap ...
D. Gogova +13 more
wiley +1 more source
Performance of a compact, continuous-wave terahertz based on a quantum-cascade laser [PDF]
, 2010 We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum cascade laser (QCL) with a compact, low-input-power Stirling ...
Richter, Heiko +9 more
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