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.
© 2017 OSA, SPIE, ICO, IEEE
PDF ArticleMore Like This
Lu Qieni, Wang Yi, and Li Hongbin
104526J Education and Training in Optics and Photonics (ETOP) 2017
Zi-Lan Deng, Yaoyu Cao, Xiangping Li, and Guo Ping Wang
Su3F.5 Asia Communications and Photonics Conference (ACP) 2017
Bo Fan, Christopher M. Roberts, Nicolas Olivier, William P. Wardley, Sandeep Inampudi, Wayne Dickson, Anatoly V. Zayats, and Viktor A Podolskiy
FTh4H.1 CLEO: QELS_Fundamental Science (CLEO:FS) 2017