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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… (More)
- Martin Persson, David Engström, Anders Frank, Jan Backsten, Joergen Bengtsson, Mattias Goksör
- Optics express
- 2010
We present a method for reducing intensity fluctuations that typically occur when a spatial light modulator is updated between consecutive computer generated holograms. The method is applicable to… (More)
- David Engström, Anders Frank, Jan Backsten, Mattias Goksör, Joergen Bengtsson
- Optics express
- 2009
Algorithms based on the fast Fourier transform (FFT) for the design of spot-generating computer generated holograms (CGHs) typically only make use of a few sample positions in the propagated field.… (More)
We have investigated design criteria for calculation of computer generated holograms, aiming to reduce the deterioration of the spot pattern during SLM updates. A modified Gerchberg-Saxton algorithm… (More)