Approximative and rigorous approaches to design diffractive gratings in the resonance domain

R. Malureanu*, D. Cojoc, M. Altissimo, L. Businaro, S. Cabrini, E. Di Fabrizio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper we compare two techniques to design diffractive gratings with periods close to the wavelength of the illumination beam. The first method, based on the Rayleigh method, is faster and allows good results if grating period is more than 1.2 bigger than the wavelength. The second method, known as Fourier Modal Method, is more precise but also requires a longer calculation time. Results obtained from the computer simulations and experiments are presented for gratings with 0.750 μm and 1.5 μm period illuminated by a collimated wave with 0.633 μm wavelength.

Original languageEnglish (US)
Pages (from-to)147-154
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5227
StatePublished - 2003
Externally publishedYes

Keywords

  • Binary gratings
  • Fourier Modal Method
  • Rayleigh method
  • Resonance domain

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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