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Artifact-free analysis of highly conducting binary gratings by using the legendre polynomial expansion method

Khavasi, A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1364/JOSAA.26.001467
  3. Publisher: OSA - The Optical Society , 2009
  4. Abstract:
  5. Analysis of highly conducting binary gratings in TM polarization has been problematic as the Fourier factorization fails and thus unwanted numerical artifacts appear. The Legendre polynomial expansion method (LPEM) is employed here, and the erroneous harsh variations attributed to the violation of the inverse rule validity in applying the Fourier factorization are filtered out. In this fashion, stable and artifact-free numerical results are obtained. The observed phenomenon is clearly demonstrated via several numerical examples and is explained by inspecting the transverse electromagnetic field profile. © 2009 Optical Society of America
  6. Keywords:
  7. Electromagnetic fields ; Field profile ; Fourier factorization ; Legendre polynomial expansion ; Numerical example ; Numerical results ; TM polarization ; Transverse electromagnetic ; Factorization
  8. Source: Journal of the Optical Society of America A: Optics and Image Science, and Vision ; Volume 26, Issue 6 , 2009 , Pages 1467-1471 ; 10847529 (ISSN)
  9. URL: https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-26-6-1467