Results 111 to 120 of about 54,131 (291)

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

Advanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida, Koichi Okamoto, Takuya Matsuda, Hajime Ishihara   +3 more
wiley   +1 more source

Measurement and Modeling of the Optical Properties of Adipose Tissue in the Terahertz Range: Aspects of Disease Diagnosis. [PDF]

Diagnostics (Basel), 2022
Yanina IY, Nikolaev VV, Zakharova OA, Borisov AV, Dvoretskiy KN, Berezin KV, Kochubey VI, Kistenev YV, Tuchin VV.   +8 more
europepmc   +1 more source

Waveguide-based calorimeter for terahertz frequency range

Electronics Letters, 2007
A calorimeter for absolute power measurements within the 0.1- 30 THz frequency range is presented and the calibration factor is estimated. Innovations in the design have allowed simplification of direct reading of incident microwave power.
T. Anbinderis, P. Anbinderis, A.-V. Usoris, P. Bagdonaitė, E. Prusakova, I. Kašalynas, E. Širmulis, D. Seliuta, G. Valušis   +8 more
openaire   +1 more source

Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation

Advanced Photonics Research, EarlyView.
Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang, Tingnuo Pan, Xiao Zhang, Wenjia Li, Bo Lv, Yuxiang Li, Zheng Zhu, Chunying Guan, Wanying Liu, Xiaohan Jiang, Jinhui Shi   +10 more
wiley   +1 more source

DUAL-FREQUENCY TERAHERTZ LASER [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The development of the terahertz (THz) frequency range reflects recent progress in radiation sources, in particular, THz (submillimeter) lasers.
M. I. Dzyubenko, Yu. E. Kamenev, V. P. Radionov   +2 more
doaj   +1 more source

Terahertz Chiral Recognition Based on Metasurfaces

Advanced Photonics Research, EarlyView.
A novel terahertz chiral sensing method based on a multilayer metallic metasurface is proposed. The left‐handed circularly polarized and right‐handed circularly polarized components in the linearly polarized illuminating light into two focal points and convert them back into linear polarization for convenient measurement.
Xuyang Ji, Yufei Liu, Shuang Sun, Zehao He, Yuyao Yang, Yan Zhang   +5 more
wiley   +1 more source

Terahertz Circular Dichroism Spectroscopy of 3D Chiral Metallic Microstructures Fabricated Using High Precision CNC Machining

IEEE Journal of Microwaves
Recent advancements in terahertz wave applications for sensing, imaging, and high-speed communication have spurred a substantial demand for low-cost, easily accessible optical components capable of manipulating terahertz wave polarization. In this study,
Atsushi Ouchi, Saroj R. Tripathi
doaj   +1 more source

Investigation on the Correlation between Dispersion Characteristics at Terahertz Range and Dielectric Permittivity at Low Frequency of Epoxy Resin Nanocomposites. [PDF]

Polymers (Basel), 2022
Lian Z, Chen D, Li S.
europepmc   +1 more source

Bound States in the Continuum in Metasurface Absorbers: A Comparison with Metasurfaces

Advanced Photonics Research, EarlyView.
Bound states in the continuum (BICs) offer a powerful mechanism for enhancing light–matter interactions. This work systematically investigates the radiation characteristics of BICs under both transmission and reflection configurations using multipolar analysis.
Guizhen Xu, Zhanqiang Xue, Jiang Du, Longqing Cong   +3 more
wiley   +1 more source

Enhanced Trapping with an Optimized Graphene‐Based Bowtie Plasmonic Nanotweezer: Design, Analysis, and Bioanalytical Applications

Advanced Photonics Research, EarlyView.
A graphene‐based bowtie plasmonic nanotweezer is designed and optimized using particle swarm optimization and transfer matrix analysis. The structure achieves strong field confinement, delivering trapping forces up to 6 nN W−1 for 10 nm bioparticles with sixfold lower power requirements than conventional designs.
Saba Ebrahimpanah, Mohammad Hazhir Mozaffari, Ali Farmani   +2 more
wiley   +1 more source