Title : ( Comparison of iterative angular spectrum and optimal rotation angle methods in designing beam-fanners )
Authors: Seyyed Hossein Kazemi Riabi , Mir Mojtaba Mirsalehi , Amir Reza Attari ,
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Abstract
We compare the iterative angular spectrum (IAS) and the optimal rotation angle (ORA) methods in designing two-dimensional finite aperture diffractive optical elements (FADOEs) used as beamfanners. The transfer functions of both methods are compared analytically in the spatial frequency domain. We have designed several structures of 1-to-4 and 1-to-6 beamfanners to investigate the differences in the performance of the beamfanners designed by ORA method for near field operation. Using the three-dimensional finite difference time-domain (3-D FDTD) method with perfect matched layer (PML) absorbing boundary condition (ABC), the diffraction efficiency is calculated for each designed FADOE and the corresponding values are compared.
Keywords
Diffractive optics; Aperture; Numerical approximation and analysis
@article{paperid:1011418,
author = {Kazemi Riabi, Seyyed Hossein and Mirsalehi, Mir Mojtaba and Attari, Amir Reza},
title = {Comparison of iterative angular spectrum and optimal rotation angle methods in designing beam-fanners},
journal = {Optics Express},
year = {2009},
volume = {17},
number = {17},
month = {August},
issn = {1094-4087},
pages = {14825--14831},
numpages = {6},
keywords = {Diffractive optics; Aperture; Numerical approximation and analysis},
}
%0 Journal Article
%T Comparison of iterative angular spectrum and optimal rotation angle methods in designing beam-fanners
%A Kazemi Riabi, Seyyed Hossein
%A Mirsalehi, Mir Mojtaba
%A Attari, Amir Reza
%J Optics Express
%@ 1094-4087
%D 2009
