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Comprehensive three-dimensional split-field finitedifference time-domain method for analysis of periodic plasmonic nanostructures: Near- and far-field formulation
Shahmansouri, A ; Sharif University of Technology | 2011
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- Type of Document: Article
- DOI: 10.1364/JOSAB.28.002690
- Publisher: Optical Society of American (OSA) , 2011
- Abstract:
- The three-dimensional split-field finite-difference time-domain (SF-FDTD) method is combined with the totalfield- scattered-field method for injecting a plane wave. A formulation is derived for calculating the incidence transformed fields of SF-FDTD on a one-dimensional auxiliary grid. The resulting fields obtained in the scattered zone are used to calculate the far fields, based on a proposed fully time-domain near-to-far-field transformation. The far-field information is used to calculate the extinction cross section of the periodic structure under oblique incidence. To analyze metallic periodic structures, a formulation with a reduced number of variables is proposed based on the auxiliary differential equation method for dispersive media
- Keywords:
- Differential equations ; Finite difference time domain method ; Periodic structures ; Three dimensional ; A-plane ; Auxiliary differential equations ; Dispersive media ; Extinction cross section ; Far-field ; Finite difference time domains ; Oblique incidence ; Plasmonic nanostructures ; Scattered field ; Time domain ; Time domain analysis
- Source: Journal of the Optical Society of America B: Optical Physics ; Volume 28, Issue 11 , 2011 , Pages 2690-2700 ; 07403224 (ISSN)
- URL: https://www.osapublishing.org/josab/abstract.cfm?uri=josab-28-11-2690