Results 71 to 80 of about 36,271 (185)

Solving a nonlinear fractional Schrödinger equation using cubic B-splines

open access: yesAdvances in Difference Equations, 2020
We study the inhomogeneous nonlinear time-fractional Schrödinger equation for linear potential, where the order of fractional time derivative parameter α varies between 0 < α < 1 $0 < \alpha < 1$ .
M. Erfanian   +3 more
doaj   +1 more source

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

open access: yesLaser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

open access: yesLaser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil   +6 more
wiley   +1 more source

Deterministic Fiber‐Optic Spectral Engineering Enables Three‐Color Multiplexed Two‐Photon Microscopy

open access: yesLaser &Photonics Reviews, EarlyView.
A simulation‐guided spectral‐engineering framework maps the nonlinear parameter space of a fiber laser platform to identify balanced three‐band excitation states. The resulting 960, 1080, and 1175 nm femtosecond pulses deliver nJ‐level energies for low‐cross‐talk chromatically multiplexed two‐photon microscopy.
Marvin Edelmann   +5 more
wiley   +1 more source

PERIODIC STATES NEAR THE PLANE DEFECT WITH NON-LINEAR RESPONSE SEPARATING NON-LINEAR SELF-FOCUSING AND LINEAR CRYSTALS

open access: yesКонденсированные среды и межфазные границы, 2018
The paper presents a model describing the peculiarities of localised excitation on the boundary between linear and nonlinear self-focusing media. The medium boundary is a plane defect with internal nonlinear properties.
Sergey E. Savotchenko
doaj   +1 more source

On linear instability of solitary waves for the nonlinear Dirac equation

open access: yes, 2013
We consider the nonlinear Dirac equation, also known as the Soler model: $i\p\sb t\psi=-i\alpha \cdot \nabla \psi+m \beta \psi-f(\psi\sp\ast \beta \psi) \beta \psi$, $\psi(x,t)\in\mathbb{C}^{N}$, $x\in\mathbb{R}^n$, $n\le 3$, $f\in C\sp 2(\R)$, where ...
Comech, Andrew   +2 more
core   +1 more source

Nonlinear Resonance Modulation in Single‐Crystalline VO2‐Integrated Si Ring Resonator

open access: yesLaser &Photonics Reviews, EarlyView.
This work first demonstrates a single‐crystalline VO2–Si hybrid ring resonator. The epitaxial lift‐off process enables high‐quality VO2 integration on the dissimilar Si photonic platform. The high‐quality VO2 film exhibits exceptional nonlinear resonance modulation and a steep optical transition across the metal‐insulator transition. ABSTRACT The metal‐
Sebae Park   +5 more
wiley   +1 more source

Birkhoff Coordinates for the Focusing NLS Equation [PDF]

open access: yes, 2018
In this paper we construct Birkhoff coordinates for the focusing nonlinear Schrödinger equation near the zero ...
Kappeler, T.   +3 more
core  

Clinical and Imaging Characteristics of Parkinson's Disease with Negative Alpha‐Synuclein Seed Amplification Assay

open access: yesMovement Disorders, EarlyView.
Abstract Background The cerebrospinal fluid alpha‐synuclein seed amplification assay (CSFasynSAA) detects alpha‐synuclein aggregation in over 90% of individuals with sporadic PD (sPD). However, the clinical characteristics of sPD with negative CSFasynSAA remain undefined.
Sarah M. Brooker   +30 more
wiley   +1 more source

Нелінійне рівняння Шредінгера [PDF]

open access: yes, 2011
(uk) В статті зроблений огляд виникнення та дослідження нелінійного рівняння Шредінгера(НРШ). Подано точні розв’язки НРШ з різними типами нелінійності.(en) The overview of genesis and research of nonlinear Schrödinger equation is done.
Гуртовий, Юрій Валерійович
core  

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