In this paper, we present a symmetrical iterative Fourier transform algorithm (IFTA) using both the phase and amplitude freedom (SIFTA_(p+a)) for the design of diffractive beam shaping elements. This algorithm is compared to the GSA, IFTA_(p+a), and SIFTA_(p), which is symmetrical IFTA exclusively using phase freedom. We compare these four methods by employing them to a number of flat-top super-Gaussian (SG) beam shaping problems. In this paper the modified Fourier-domain constraint is decided automatically by iteration
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Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Date of Conference: 17-17 June 2005