Results 31 to 40 of about 41,968 (295)
Beilstein Journal of Nanotechnology, 2018 We have fabricated two-dimensional photonic crystals (PhCs) on the surface of Si nanocrystal-rich SiO2 layers with the goal to maximize the photoluminescence extraction efficiency in the normal direction.
Lukáš Ondič +5 more
doaj +1 more source
Elastic Wave Eigenmode Solver for Acoustic Waveguides [PDF]
, 2017 A numerical solver for the elastic wave eigenmodes in acoustic waveguides of inhomogeneous cross-section is presented. Operating under the assumptions of linear, isotropic materials, it utilizes a finite-difference method on a staggered grid to solve for
Dostart, Nathan +2 more
core +4 more sources
Advances in the research of seismic-wave leaky modes
地球与行星物理论评When seismic waves propagate in layered structures, dispersion phenomena occur. Based on the characteristics of dispersion curves, underground velocity structures can be estimated.
Caiwang Shi, Zhengbo Li, Xiaofei Chen
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Using quasi-guided modes for modeling the transfer behavior of bent dielectric slab waveguides [PDF]
Advances in Radio Science, 2010 The connection of two straight dielectric multimode slab waveguides by a circular bent waveguide is analyzed by means of quasi-guided modes. These modes correspond to the well known leaky modes, but own real eigenvalues, thus the mathematical ...
M. Stallein, B. Bandlow, R. Schuhmann
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Spontaneous symmetry breaking of self-trapped and leaky modes in quasi-double-well potentials
, 2016 We investigate competition between two phase transitions of the second kind induced by the self-attractive nonlinearity, viz., self-trapping of the leaky modes, and spontaneous symmetry breaking (SSB) of both fully trapped and leaky states.
Dror, Nir +4 more
core +1 more source
Leakage Effects of Dominant and Higher Order Modes on Slotline [PDF]
, 1996 The properties of the slotline when the dominant bound or leaky wave propagates, together with the behaviour of new higher order modes are investigated. The frequency range in which the slotline transmits the bound wave only is determined and the closed ...
Macháč, Jan, Zehentner, Jan
core +1 more source
MATEC Web of Conferences, 2018 In this paper the algorithm of finding eigenvalues and eigenfunctions for the leaky modes in a three-layer planar dielectric waveguide is considered.
Divakov Dmitriy +2 more
doaj +1 more source
Enhanced nonlinear frequency conversion and Purcell enhancement at exceptional points
, 2017 We derive analytical formulas quantifying radiative emission from subwavelength emitters embedded in triply resonant nonlinear $\chi^{(2)}$ cavities supporting exceptional points (EP) made of dark and leaky modes.
Jin, Weiliang +3 more
core +1 more source
Guiding light by and beyond the total internal reflection mechanism [PDF]
, 2005 This thesis reports a series of techniques the author has developed to model various waveguiding structures, including the conventional planar and channel waveguides working by, and the advanced structures working beyond the TIR mechanism.
Uranus, Henri Putra
core +6 more sources
Far-field probing of leaky topological states in all-dielectric metasurfaces
Nature Communications, 2018 Topological modes in photonics systems are not completely confined to the structure but can leak into free space. Here, Gorlach et al. exploit these leaky modes to probe the topological properties of a dielectric metasurface from far-field scattering ...
Maxim A. Gorlach +8 more
doaj +1 more source