Results 61 to 70 of about 5,194,279 (273)

Properties of length-apodized phase-shifted lpgs operating at the phase matching turning point [PDF]

, 2012
The characteristics of length-apodized phase-shifted fiber optic long period gratings with full and partial nanostructured coatings have been explored theoretically and experimentally.
Tatam, Ralph P., James, Stephen W., Topliss, Stephen M.   +2 more
core   +1 more source

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

Advanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge, Olivia Harper, Jaejun Lee, Sergio Gonzalez‐Munoz, Vladimir V. Tsukruk   +4 more
wiley   +1 more source

Retrieving quasi-phase-matching structure with discrete layer-peeling method [PDF]

, 2012
An approach to reconstruct a quasi-phase-matching grating by using a discrete layer-peeling algorithm is presented. Experimentally measured output spectra of Solc-type filters, based on uniform and chirped QPM structures, are used in the discrete layer ...
Zhang, Q. W., Zeng, Xianglong, Wang, T. Y., Chen, X. F., Wang, M.   +4 more
core   +1 more source

QPM grating design for novel PPLN structures

, 2009
This thesis describes a series of theoretical and experimental studies into modifying the phasematching characteristics of nonlinear parametric interactions, specifically second harmonic generation, using quasi-phase-matched structures.
Major, Huw E.
core   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

Advanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider, Jiajie Liang, Paul Somers, Martin Wegener, Jens Bauer   +4 more
wiley   +1 more source

Quasi-Phase-Matching Method Based on Coupling Compensation for Surface Second-Harmonic Generation in Optical Fiber Nanowire Coupler

, 2018
Efficient second harmonic generation (SHG) employing quasi-phase-matching (QPM) method based on the spatial modulation of mode intensity has been demonstrated experimentally and theoretically in the optical fiber coupler system for the first time.
Jin-hui Chen, Dan-ran Li, Fei Xu, Dan-ran Li (5758679), Guang-xing Wu, Guang-xing Wu (5758673), Fei Xu (368913), Jin-hui Chen (5758676)   +7 more
core   +1 more source

Negative first-order quasi-phase matching

, 2020
ISBN 978-1-943580-84-2International audienceWe propose a new scheme of quasi-phase matching based on the negative first-order of the spatial modulation of the sign of the second-order optical nonlinearity.
Joly, Simon, Boulanger, Benoît, Petit, Yannick, Pasiskevicius, Valdas, Zukauskas, Andrius, Pena Revellez, Alexandra, Segonds, Patricia, Debray, Jérôme, Laurell, Fredrik, Canalias, Carlota   +9 more
core   +2 more sources

Sub-wavelength modulation of χ(2) optical nonlinearity in organic thin films

Nature Communications, 2017
Materials with spatially modulated nonlinear optical properties are used for quasi-phase matching. Here, Yanet al. exploit the nonlinearity of intermolecular charge transfer states together with oblique-angle deposition to achieve nanoscale modulation of
Yixin Yan, Yakun Yuan, Baomin Wang, Venkatraman Gopalan, Noel C. Giebink   +4 more
doaj   +1 more source

Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3

Advanced Functional Materials, EarlyView.
Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh, Heung‐Sik Park, Jong‐Sook Lee, Chan‐Ho Yang   +3 more
wiley   +1 more source

Simultaneous Enhancement of Performance and Stability in Dual‐Gate a‐IGZO Thin‐Film Transistors via Single‐Step Laser Annealing for Capacitor‐Less DRAM

Advanced Functional Materials, EarlyView.
A single‐step laser annealing strategy is presented for dual‐gate a‐IGZO TFTs. The steep thermal gradient induces graded oxygen doping in the channel and simultaneous WOx removal at the contacts, enabling concurrent interface and contact engineering.
Sihyeon Kwon, Junil Kim, Geuntae Park, Minseok Kim, Woohyun Hwang, Wanki Kim, Daewon Ha, Byeongmoon Lee, Jae Eun Jang, Hyuk‐Jun Kwon   +9 more
wiley   +1 more source