Results 131 to 140 of about 12,195 (298)
Recent Advances in Programmable Metasurfaces and Meta‐Devices
Advanced Electronic Materials, EarlyView.Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao +4 more
wiley +1 more source
Terahertz-induced cascaded interactions between spectra offset by large frequencies
, 2019 We explore the dynamics of a system where input spectra in the optical domain with very disparate center frequencies are strongly coupled via highly phase-matched, cascaded second-order nonlinear processes driven by terahertz radiation.
Franz X. Kärtner (3962066) +1 more
core +1 more source
Advanced Energy Materials, EarlyView.An alcohol‐adduct‐mediated strategy is employed to stabilize tin isopropoxide for the formation of a homogeneous double electron transport layer (ETL) incorporating SnO2 nanoparticles (NPs). This double‐ETL exhibits improved optical and charge‐transport properties due to reduced defect density and better energy level alignment, resulting in high ...
You‐Hyun Seo +10 more
wiley +1 more source
Passively mode-locked semiconductor lasers and their applications [PDF]
, 2008 In this paper we present some characterizations of passively mode-locked semiconductor lasers. These lasers are multimode and they exhibit a modulation of their output power even though they are DC-biased.
Frederic Surre +5 more
core +1 more source
Holographic Mapping of Orbital Angular Momentum using a Terahertz Diffractive Optical Neural Network
Advanced Intelligent Discovery, EarlyView.A compact six‐layer diffractive optical neural network enables direct recognition and spatial mapping of terahertz (THz) orbital angular momentum (OAM) beams. Fabricated by 3D printing, the system distinguishes nine OAM modes and their superpositions with high fidelity, good efficiency, and low crosstalk, offering a scalable solution for THz ...
Wei Jia +3 more
wiley +1 more source
Highly efficient broadband terahertz generation from ultrashort laser filamentation in liquids
Nature Communications, 2017 Developing simple and efficient table-top sources of intense terahertz radiation is an ongoing pursuit. Here, Dey et al. demonstrate broadband terahertz generation from laser filamentation in liquids with an order of magnitude higher energy than from ...
Indranuj Dey +10 more
doaj +1 more source
Theoretical studies of the optical properties of photonic crystal and microcavity-based structures [PDF]
, 2013 The work reported in this thesis is dedicated to the theoretical study of the certain properties of several types of resonant and nonresonant photonic nanostructures. Negative refraction at the side edge of a Bragg reflector is studied.
IORSH, IVAN
core
A fundamental work on THz measurement techniques for application to steel manufacturing processes
, 2005 The terahertz (THz) waves had not been obtained except by a huge system, such as a free electron laser, until an invention of a photo-mixing technique at Bell laboratory in 1984 [1]. The first method using the Auston switch could generate up to 1 THz [2].
Hasegawa, Noboru
core
Atoms in intense ultrashort laser pulses and the absolute phase [PDF]
, 2004 Diese Arbeit beschäftigt sich mit der experimentellen Analyse atomarer Prozesse in intensiven ultrakurzen Laserpulsen. Der Schwerpunkt liegt hierbei bei den Zwillingseffekten der Erzeugung hoher Harmonischer (``high-order harmonic generation'', HHG) und ...
Lindner, F., Lindner, Fabrizio
core
Near-field THz imaging and spectroscopy using a multiple subwavelength aperture modulator
, 2013 We present a near-field, simultaneous multiple pixel subwavelength THz transmission imaging device based on a solid-state THz spatial modulator. Frequency-division multiplexing is used to acquire multiple pixels simultaneously.
Rutt, Harvey, Szelc, Jedrzej
core +1 more source