A single-plane FFT-based algorithm which optimizes a defocused field corresponding to a desired spatial configuration of focused spots is presented. The defocused target field allows for grid-free spot positioning in 2D and 3D.
© 2009 The Optical Society
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1970) Diffraction and gratings : Diffractive optics
(230.0230) Optical devices : Optical devices
(230.6120) Optical devices : Spatial light modulators
D. Engström, A. Frank, J. Backsten, M. Goksör, and J. Bengtsson, "Rapid SLM Design for Grid-Free Multispot Positioning in 2D and 3D with a Modified Gerchberg-Saxton Algorithm," in Advances in Imaging, OSA Technical Digest (CD) (Optical Society of America, 2009), paper DWB13.
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