Results 31 to 40 of about 2,220,247 (238)

Nonlinear Optical Rectification of Confined Exciton in a ZnO/ZnMgO Strained Quantum Dot [PDF]

Журнал нано- та електронної фізики, 2012
Heavy hole exciton binding energies as functions of dot radius and the Mg alloy content in a ZnO/MgxZn1 – xO quantum dot are investigated. The effects of strain, including the hydrostatic and the biaxial strain, and the internal electric field, due to ...
N.S. Minimala, A. John Peter
doaj  

Nonlinear distortion of intense THz beams

New Journal of Physics, 2015
Near- and far-field beam profiles were measured for THz pulses generated in LiNbO _3 by optical rectification of 200 fs pulses with a tilted pulse front.
Cs Lombosi, Gy Polónyi, M Mechler, Z Ollmann, J Hebling, J A Fülöp   +5 more
doaj   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Generation and 2D field imaging of THz vortex beams [PDF]

EPJ Web of Conferences
Optical rectification along three-fold axis in zincblende-symmetry crystal is used to generate vector and scalar vortex beams in THz. 2D electro-optic imaging is used for frequency- resolved THz field amplitude and phase characterization.
Liu Yaqun, Pasiskevicius Valdas
doaj   +1 more source

Optical rectification by ratchet transport in an asymmetric grating

AIP Advances, 2021
We report on electron ratchet transport’s manifestation in the optical rectification (OR) of an asymmetric grating. The photon-drag enabled effect is magnified by asymmetric photon scatterings and the induced optical nonlinearity associated with the ...
P. Moroshkin, T. Ochiai, R. Osgood III, J. Xu   +3 more
doaj   +1 more source

Gate-Tunable Polarity-Reconfigurable Photovoltaic Response With Dual Linearity in NbS₃/WSe₂ Heterostructures for In-Sensor Image Processing. [PDF]

Adv Sci (Weinh)
An NbS3/WSe2 van der Waals heterostructure realizes a continuously gate‐tunable self‐powered photovoltaic response through interfacial band‐alignment modulation and reversible built‐in electric‐field switching. The short‐circuit photocurrent scales linearly with incident power density, while short‐circuit photoresponsivity varies linearly with gate ...
Liu J, Xie J, Hao Q, Hu Y, He Z, Liu H, Lin D, Gan H, Tu Y, Zhang W.   +9 more
europepmc   +2 more sources

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Multimode Oxide‐Based Optoelectronic Memtransistor for In‐Sensor Vision Processing

Advanced Functional Materials, EarlyView.
A multimode optoelectronic memtransistor (OEMT) is demonstrated for vision explainable artificial intelligence (VXAI) hardware. By integrating optical sensing, electrical masking, and non‐volatile memory, the device enables key operations required for generating saliency information.
Min Gu Lee, Geunyoung Kim, Hwa Young Kim, Do Hoon Kim, Hanchan Song, Huisu Noh, Jungwan Noh, Seungwoo Lee, Sang‐Hee Ko Park, Himchan Cho, Kyung Min Kim   +10 more
wiley   +1 more source

Generation of femtosecond pulse bursts at multiple-THz repetition rate by nonlinear self-compression in bulk KTP [PDF]

EPJ Web of Conferences
A chirped 470 fs pulse at 1030 nm was used to generate a phonon-polariton wave in bulk KTP by optical rectification. Phase modulation of the pump by the polariton wave resulted in generation of a burst of 20 fs pulses.
Krook Christoffer Oxelmark, Pasiskevicius Valdas   +1 more
doaj   +1 more source

Tuning the Nonlinear Optical Properties of Quantum Dot by Noise-Anharmonicity Interaction

Atoms, 2022
Current inspection rigorously explores the tuning of a few relevant nonlinear optical (NLO)properties of GaAs quantum dot (QD) under the stewardship of Gaussian noise-anharmonicity interplay.
Debi Roy, Sk. Md. Arif, Swarnab Datta, Manas Ghosh   +3 more
doaj   +1 more source