Near-field diffraction from amplitude diffraction gratings: Theory, simulation and results

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Abstract

We describe a computer simulation method by which the complete near-field diffract pattern of an amplitude diffraction grating can be generated. The technique uses the method of iterative Fresnel integrals to calculate and generate the diffraction images. Theoretical background as well as the techniques to perform the simulation is described. The program is written in MATLAB, and can be implemented in any ordinary PC. Examples of simulated diffraction images are presented and discussed. The generated images in the far-field where they reduce to Fraunhofer diffraction pattern are also presented for a realistic grating, and compared with the results predicted by the grating equation, which is applicable in the far-field. The method can be used as a tool to teach the complex phenomenon of diffraction in classrooms.

Original languageEnglish
Title of host publication14th Conference on Education and Training in Optics and Photonics, ETOP 2017
PublisherSPIE
Volume10452
ISBN (Electronic)9781510613812
DOIs
Publication statusPublished - 2017
Event14th Conference on Education and Training in Optics and Photonics, ETOP 2017 - Hangzhou, China
Duration: May 29 2017May 31 2017

Other

Other14th Conference on Education and Training in Optics and Photonics, ETOP 2017
CountryChina
CityHangzhou
Period5/29/175/31/17

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Keywords

  • amplitude diffraction gratings
  • Computer simulation
  • Fresnel integrals
  • MATLAB
  • near-field diffraction

ASJC Scopus subject areas

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

Cite this

Abedin, K. M., & Rahman, S. M. M. (2017). Near-field diffraction from amplitude diffraction gratings: Theory, simulation and results. In 14th Conference on Education and Training in Optics and Photonics, ETOP 2017 (Vol. 10452). [1045208] SPIE. https://doi.org/10.1117/12.2262257