Results 71 to 80 of about 56,977 (335)

Generation of spatiotemporally tailored terahertz wavepackets by nonlinear metasurfaces

Nature Communications, 2019
While the terahertz range has become increasingly important for a wide range of applications, efficient sources with bespoke output characteristics are still lacking. Here, Keren-Zur et al.
Shay Keren-Zur, Mai Tal, Sharly Fleischer, Daniel M. Mittleman, Tal Ellenbogen   +4 more
doaj   +1 more source

Sub-diffraction thin-film sensing with planar terahertz metamaterials

, 2011
Planar metamaterials have been recently proposed for thin dielectric film sensing in the terahertz frequency range. Although the thickness of the dielectric film can be very small compared with the wavelength, the required area of sensed material is ...
Abbott, Derek, Bhaskaran, Madhu, Fumeaux, Christophe, Lin, Hungyen, Serita, Kazunori, Shah, Charan M., Sriram, Sharath, Tonouchi, Masayoshi, Withayachumnankul, Withawat   +8 more
core   +1 more source

Observation of a cascaded process in intracavity terahertz optical parametric oscillators based on lithium niobate [PDF]

, 2013
Cascaded difference frequency generation has been observed in intracavity optical parametric oscillators based on bulk lithium niobate and producing nanosecond pulses of terahertz radiation.
Dunn, M. H., Thomson, C. L.
core   +1 more source

Photon-Assisted Shot Noise in Graphene in the Terahertz Range [PDF]

Physical Review Letters, 2016
When subjected to electromagnetic radiation, the fluctuation of the electronic current across a quantum conductor increases. This additional noise, called photon-assisted shot noise, arises from the generation and subsequent partition of electron-hole pairs in the conductor.
Parmentier, François, Serkovic-Loli, L.N., Roulleau, P., Glattli, D.C.   +3 more
openaire   +4 more sources

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

High-temperature terahertz quantum-cascade lasers: design optimization and experimental results

Российский технологический журнал, 2022
Objectives. Terahertz quantum-cascade lasers (THz QCLs) are compact solid-state lasers pumped by electrical injection to generate radiation in the range from 1.2 to 5.4 THz.
D. V. Ushakov, A. A. Afonenko, I. A. Glinskiy, R. A. Khabibullin   +3 more
doaj   +1 more source

Resonant scattering probes in the terahertz range [PDF]

2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017
We propose and demonstrate a novel near-field probe, resonant at terahertz (THz) frequencies. A conical metal tip, with length 50–1000 μm is fabricated directly to the surface of a semiconductor surface, acting as a radially-polarized THz source. High field confinement is seen at the apex of the probe.
Thomas Siday, Michele Natrella, Jiang Wu, Huiyun Liu, Oleg Mitrofanov   +4 more
openaire   +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

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Developments in THz range ellipsometry

, 2013
Ellipsometry is a technique whereby the measurement of the two orthogonal polarization components of light reflected at glancing incidence allows a characterization of the optical properties of a material at a particular frequency.
Armitage, N. P., Neshat, M.
core   +1 more source