Pseudospectral modal method for conical diffraction of gratings

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)1729-1734
Journal / PublicationJournal of Modern Optics
Issue number20
Online published28 Nov 2013
Publication statusPublished - 2013


For lamellar gratings and other layered periodic structures, the modal methods (including both analytic and numerical ones) are often the most efficient, since they avoid the discretization of one spatial variable. The pseudospectral modal method (PSMM) previously developed for in-plane diffraction problems of one-dimensional gratings achieves high accuracy for a small number of discretization points, and it outperforms most other modal methods. In this paper, an extension of the PSMM to conical diffraction problems is presented and implemented. Numerical examples are used to demonstrate the high accuracy and excellent convergence property of this method for both dielectric and metallic gratings. © 2013 Taylor & Francis.

Research Area(s)

  • diffraction gratings, modal method, numerical methods, pseudospectral method