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A study on the Convergence of Iterative Fourier Transform Algorithm for Optimal Design of Diffractive Optical Elements  

Kim, Hwi (National Research Laboratory of Holography Technologies, School of Electrical Engineering, Seoul National University)
Yang, Byung-Choon (National Research Laboratory of Holography Technologies, School of Electrical Engineering, Seoul National University)
Park, Jin-Hong (National Research Laboratory of Holography Technologies, School of Electrical Engineering, Seoul National University)
Lee, Byoung-Ho (National Research Laboratory of Holography Technologies, School of Electrical Engineering, Seoul National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.40, no.5, 2003 , pp. 298-311 More about this Journal
Abstract
Iterative Fourier transform algorithm, (IFTA) is tile iterative numerical algorithm for the design of the diffractive optical elements (DOE), by which the phase distribution of a DOE converges on a local optimal solution. The convergence of IFTA depends on several factors 3s initial phase distribution, the structure of the degree of freedom on the observation plane, and the values of internal parameters. In this paper, we analyze tile dependence of the convergence of IFTA on an internal parameter of IFTA, the relaxation parameter, and propose a new hybrid scheme of genetic algorithm and IFTA to obtain more accurate solution.
Keywords
Iterative Fourier transform algorithm; diffractive optical element; relaxation Parameter; genetic algorithm;
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