Coupled wave method with modified boundary conditions for diffraction grating calculations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10417397" target="_blank" >RIV/00216208:11320/20:10417397 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hiSGNUhdLf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hiSGNUhdLf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.35848/1347-4065/ab6cb2" target="_blank" >10.35848/1347-4065/ab6cb2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coupled wave method with modified boundary conditions for diffraction grating calculations

Popis výsledku v původním jazyce

The Fourier modal method for grating diffraction calculations is reformulated to improve its numerical performance, which is then studied on a rectangular aluminium grating. The Fourier coefficients of the rectangular permittivity function are calculated by the discrete Fourier transform from equidistant sample points rather than from the Fourier integral, which partially suppresses the Gibbs phenomenon. The continuous field components are treated in the Fourier space analogously to the conventional algorithm, whereas the discontinuous components are calculated in the direct space. The lateral component of the electric field, which is discontinuous inside the periodic medium but continuous on horizontal interfaces, is used for the boundary conditions in the direct space, which improves the convergence of diffraction efficiencies and considerably suppresses field fluctuations in the vicinity of sharp corners. (C) 2020 The Japan Society of Applied Physics

Název v anglickém jazyce

Coupled wave method with modified boundary conditions for diffraction grating calculations

Popis výsledku anglicky

The Fourier modal method for grating diffraction calculations is reformulated to improve its numerical performance, which is then studied on a rectangular aluminium grating. The Fourier coefficients of the rectangular permittivity function are calculated by the discrete Fourier transform from equidistant sample points rather than from the Fourier integral, which partially suppresses the Gibbs phenomenon. The continuous field components are treated in the Fourier space analogously to the conventional algorithm, whereas the discontinuous components are calculated in the direct space. The lateral component of the electric field, which is discontinuous inside the periodic medium but continuous on horizontal interfaces, is used for the boundary conditions in the direct space, which improves the convergence of diffraction efficiencies and considerably suppresses field fluctuations in the vicinity of sharp corners. (C) 2020 The Japan Society of Applied Physics

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA19-13310S" target="_blank" >GA19-13310S: Topologické excitované stavy elektronů ve feromagnetech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Japanese Journal of Applied Physics

ISSN

0021-4922

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

march 20

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

7

Strana od-do

SEEB02

Kód UT WoS článku

000520012300011

EID výsledku v databázi Scopus

2-s2.0-85082749376