نتایج جستجو برای: kronig

تعداد نتایج: 587  

Journal: :Advanced photonics research 2023

Photonic neural networks (PNNs) are promising to replace conventional deep learning hardware due their potentially higher energy efficiency and computational speed. Other than the fast progress on optical linear transformer, nonlinear activators much less mature. Usually, employ mapping from input amplitude output amplitude, which is limited by high threshold loss, or rely additional bias volta...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2020

1995
Pavel Exner

A modiication of the Kronig{Penney model consisting of equidistantly spaced 0 {interactions is considered. We prove that absolutely continuous spectrum of such a system disappears under innuence of an external electric eld. The result extends to periodic lattices of non{identical 0 interactions and potentials whose behavior, up to a bounded term, is powerlike with a power 1 on the decreasing side.

2014
A. Kivimaeki Patrick Norman M. Coreno M. de Simone C. Grazioli R. Totani B. Ressel H. Ottosson A. Kivimäki P. Norman

A. Kivimaeki, Patrick Norman, M. Coreno, M. de Simone, C. Grazioli, R. Totani, B. Ressel, H. Ottosson and C. Puglia, Use of two-dimensional photoelectron spectroscopy in the decomposition of an inner-shell excitation spectrum broadened by super-Coster-Kronig decay, 2013, Physical Review A. Atomic, Molecular, and Optical Physics, (88), 6, 062502. http://dx.doi.org/10.1103/PhysRevA.88.062502 Copy...

Journal: :Physical review letters 2003
D R Solli C F McCormick C Ropers J J Morehead R Y Chiao J M Hickmann

We present an experimental and theoretical study of a simple, passive system consisting of a birefringent, two-dimensional photonic crystal and a polarizer in series, and show that superluminal dispersive effects can arise even though no incident radiation is absorbed or reflected. We demonstrate that a vector formulation of the Kramers-Kronig dispersion relations facilitates an understanding o...

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