TY - GEN
T1 - Near-field diffraction from amplitude diffraction gratings
T2 - 14th Conference on Education and Training in Optics and Photonics, ETOP 2017
AU - Abedin, Kazi Monowar
AU - Rahman, S. M.Mujibur
N1 - Publisher Copyright:
© 2017 ICO, IEEE, OSA, SPIE.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Computer simulation
KW - Fresnel integrals
KW - MATLAB
KW - amplitude diffraction gratings
KW - near-field diffraction
UR - http://www.scopus.com/inward/record.url?scp=85029508689&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029508689&partnerID=8YFLogxK
U2 - 10.1117/12.2262257
DO - 10.1117/12.2262257
M3 - Conference contribution
AN - SCOPUS:85029508689
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 14th Conference on Education and Training in Optics and Photonics, ETOP 2017
A2 - Liu, Xu
A2 - Zhang, Xi-Cheng
PB - SPIE
Y2 - 29 May 2017 through 31 May 2017
ER -