Results 21 to 30 of about 250,376 (217)
Scattering matrix theory for nonlinear transport [PDF]
Physical Review B, 1998 We report a scattering matrix theory for dynamic and nonlinear transport in coherent mesoscopic conductors. In general this theory allows predictions of low frequency linear dynamic conductance, as well as weakly nonlinear DC conductance. It satisfies the conditions of gauge invariance and electric current conservation, and can be put into a form ...
Wang, J, Ma, ZS, Guo, H
openaire +4 more sources
Nonlinear Scattering Matrix in Quantum Optics
Mathematics, 2023 It is well known that the scattering matrix plays an important role in quantum optics. This matrix converts the incoming characteristics of scattered radiation into output characteristics.
Dmitry Makarov +2 more
doaj +1 more source
Frequency shifts in stimulated Raman scattering [PDF]
, 1980 The nonresonant contributions to the nonlinear susceptibility χ(3) produce a frequency chirp during stimulated Raman scattering. In the case of transient stimulated Raman scattering, the spectrum of the generated Stokes pulse is found at higher ...
Kaiser, Wolfgang, Zinth, Wolfgang
core +1 more source
Improved local-constant-field approximation for strong-field QED codes [PDF]
, 2019 The local-constant-field approximation (LCFA) is an essential theoretical tool for investigating strong-field QED phenomena in background electromagnetic fields with complex spacetime structure.
Di Piazza, A. +3 more
core +2 more sources
Realizing the second harmonic acoustic focusing based on an artificial bubble array
AIP Advances, 2022 Ultrasonic imaging technologies possess extensive applications in modern medical diagnosis and treatment. In this paper, a designed artificial bubble array is utilized to establish a multi-scattering sound field model to describe the nonlinear vibration ...
Zhaoyu Deng +3 more
doaj +1 more source
Response of bubbles to diagnotic ultrasound:a unifying theoretical approach [PDF]
, 1998 The scattering of ultrasound from bubbles of $\sim 1~\mu$m radius, such as used in contrast enhancers for ultrasound diagnostics, is studied. We show that sound scattering and ``active'' emission of sound from oscillating bubbles are not contradictory ...
Hilgenfeldt, S., Lohse, D., Zomack, M.
core +5 more sources
Scattering statistics in nonlinear wave chaotic systems [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2019 The Random Coupling Model (RCM) is a statistical approach for studying the scattering properties of linear wave chaotic systems in the semi-classical regime. Its success has been experimentally verified in various over-moded wave settings, including both microwave and acoustic systems.
Min Zhou +3 more
openaire +3 more sources
Beilstein Journal of Nanotechnology, 2019 Nonlinear nanoplasmonics is a largely unexplored research area that paves the way for many exciting applications, such as nanolasers, nanoantennas, and nanomodulators.
Tushar C. Jagadale +2 more
doaj +1 more source
Nonlinear transport theory for hybrid normal-superconducting devices [PDF]
, 2000 We report a theory for analyzing nonlinear DC transport properties of mesoscopic or nanoscopic normal-superconducting (N-S) systems. Special attention was paid such that our theory satisfies gauge invariance.
Guo, Hong +4 more
core +2 more sources
Nonlinear Lamb Wave Micro-Crack Direction Identification in Plates with Mixed-Frequency Technique
Applied Sciences, 2020 This paper investigates the direction identification of micro-cracks with nonlinear components generated by Lamb wave with frequency-mixing technique. Three-dimensional finite element simulations were carried out to investigate the interaction mechanism ...
Liqiang Guan +3 more
doaj +1 more source