An improved approach called the weighted YG algorithm for the design of the diffractive phase element (DPE) that implements beam shaping in the fractional Fourier transform domain and free space is presented. Modeling designs of the DPE are carried out for several fractional orders and different param eters of the beam for optimally converting a Gaussian profile into a uniform beam. We found that our algorithm can improve the beam shaping effect, reduce the error function, and increase uniformity of light intensity.
© 2011 Optical Society of America
Diffraction and Gratings
Original Manuscript: May 25, 2011
Revised Manuscript: July 27, 2011
Manuscript Accepted: August 23, 2011
Published: October 25, 2011
Xia Yu, Ke-Qiu Chen, and Yan Zhang, "Optimization design of diffractive phase elements for beam shaping," Appl. Opt. 50, 5938-5943 (2011)