Results 91 to 100 of about 48,397 (306)

Fluence and polarisation dependence of GaAs based Lateral Photo-Dember terahertz emitters

, 2014
We characterise THz output of lateral photo-Dember (LPD) emitters based on semi-insulating (SI), unannealed and annealed low temperature grown (LTG) GaAs.
Apostolopoulos, V., Barnes, M.E., Beere, H.E., Berry, S.A., Gow, P., McBryde, D., Ritchie, D.A.   +6 more
core   +1 more source

Ultrafast Terahertz Field Control of the Emergent Magnetic and Electronic Interactions at Oxide Interfaces

Advanced Materials, EarlyView.
Intense single‐cycle THz electric‐field pulses enable ultrafast control of emergent electronic and magnetic states at LaNiO3/CaMnO3 interfaces. Combined X‐ray and optical probes reveal sub‐picosecond demagnetization driven by spin‐polarized currents and slower magnetoelastic dynamics linked to spin–lattice coupling.
Abigail M. Derrico, Martina Basini, Vivek Unikandanunni, Jay R. Paudel, Mikhail Kareev, Michael Terilli, Tsung‐Chi Wu, Afnan Alostaz, Christoph Klewe, Padraic Shafer, Andrei Gloskovskii, Christoph Schlueter, Claus M. Schneider, Jak Chakhalian, Stefano Bonetti, Alexander X. Gray   +15 more
wiley   +1 more source

Terahertz Time-Domain Spectroscopy of Substituted Gadolinium Gallium Garnet

Condensed Matter
Temperature dependence of the lowest frequency transverse optical phonon (TO1) in a single crystal Substituted Gadolinium Gallium Garnet (SGGG, (001)) was studied using terahertz time-domain spectroscopy at temperatures between 80 K and 500 K.
Ke Wang, Junchao Xu, Hironaru Murakami, Hiroyasu Yamahara, Munetoshi Seki, Hitoshi Tabata, Masayoshi Tonouchi   +6 more
doaj   +1 more source

Stratified dispersive model for material characterization using terahertz time-domain spectroscopy

, 2014
We propose a novel THz material analysis approach which provides highly accurate material parameters and can be used for industrial quality control.
Kuzmenko, A. B., Merbold, H., van Mechelen, J. L. M.   +2 more
core   +2 more sources

Strong Anisotropy in Liquid Water upon Librational Excitation using Terahertz Laser Fields

, 2020
Tracking the excitation of water molecules in the homogeneous liquid is challenging due to the ultrafast dissipation of rotational excitation energy through the hydrogen-bonded network.
Adams, Ellen M., Bennett, Kochise C., Colchero, Alejandro, Havenith, Martina, Head-Gordon, Teresa, Hoberg, Claudius, Novelli, Fabio, Ockelmann, Thorsten, Pestana, Luis Ruiz, Ruiz Pestana, Luis, Schwaab, Gerhard, Sebastiani, Federico, Stavrias, Nikolas   +12 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Terahertz Time-Domain Spectroscopy Materials Parameters Extraction Using Neural Networks [PDF]

EPJ Web of Conferences
In this work, we present a novel approach to determine the refractive index n and the extinction coefficient κ from terahertz time-domain spectroscopy (THz-TDS) measurements using artificial neural networks (ANNs).
Kaouther Cherigui Amina, Lazoul Mohamed
doaj   +1 more source

Non-Destructive Identification of Drugs in Plastic Packaging Using Attenuated Total Reflection Terahertz Time Domain Spectroscopy [PDF]

, 2022
Kazuma Hashimoto, Saroj R. Tripathi
openalex   +1 more source

System-theoretical modeling of terahertz time-domain spectroscopy with ultra-high repetition rate mode-locked lasers.

Optics Express, 2020
Terahertz time-domain spectroscopy (THz-TDS) systems based on ultra-high repetition rate mode-locked laser diodes (MLLDs) and semiconductor photomixers show great potential in terms of a wide bandwidth, fast acquisition speed, compactness, and robustness.
K. Kolpatzeck, Xuan-He Liu, K. Tybussek, L. Häring, M. Zander, W. Rehbein, M. Moehrle, A. Czylwik, J. Balzer   +8 more
semanticscholar   +1 more source

Disorder Scattering Induced Large Room Temperature Nonlinear Anomalous Hall Effect in a Semiconductor CdGeAs2

Advanced Materials, EarlyView.
Bulk CdGeAs2, a well‐known nonlinear optical semiconductor, exhibits an exceptionally large room‐temperature nonlinear Hall effect (NLHE), achieving a record‐high nonlinear Hall responsivity of 2.2 × 10−3 m/V. This pronounced NLHE enables broadband frequency mixing up to the megahertz regime, establishing CdGeAs2 as a promising platform for next ...
Seng Huat Lee, Takumi Iwaya, Kosuke Nakayama, Ting Yong Lim, Lujin Min, Jingyang He, Yu Wang, Venkatraman Gopalan, Zhijian Xie, Xing‐Chen Pan, Yong P. Chen, Tay‐Rong Chang, Hsin Lin, Liang Fu, Kouji Segawa, Takafumi Sato, Zhiqiang Mao   +16 more
wiley   +1 more source