Title :
Symmetrical iterative Fourier-transform algorithm using both phase and amplitude freedom for the design of diffractive beam shaping elements
Author :
Liu, Jinsong ; Thomson, Martin J. ; Taghizadeh, Mohammad R.
Author_Institution :
Sch. of Eng. & Phys. Sci., Heriot-Watt Univ., Edinburgh
Abstract :
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
Keywords :
Fourier transform optics; diffractive optical elements; iterative methods; laser beams; optical pulse shaping; amplitude freedom; diffractive beam shaping element; flat-top super-Gaussian beam shaping problem; modified Fourier-domain constraint; phase freedom; symmetrical iterative Fourier-transform algorithm; Algorithm design and analysis; Biomedical engineering; Constraint theory; Design engineering; Diffraction; Iterative algorithms; Niobium; Optimized production technology; Particle beams; Physics;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Conference_Location :
Munich
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568386
