Grid-free 3D multiple spot generation with an efficient single-plane FFT-based algorithm

Engström, David,1976Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg (författare)

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. We have developed a new design method that much better utilizes the information-carrying capacity of the sampled propagated field. In this way design tasks which are difficult to accomplish with conventional FFT-based design methods, such as spot positioning at non-sample positions and/or spot positioning in 3D, are solved as easily as any standard design task using a conventional method. The new design method is based on a projection optimization, similar to that in the commonly used Gerchberg-Saxton algorithm, and the vastly improved design freedom comes at virtually no extra computational cost compared to the conventional design. Several different design tasks were demonstrated experimentally with a liquid crystal spatial light modulator, showing highly accurate creation of the desired field distributions.

Frank, AndersChalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f99anfr (författare)
Backsten, Jan (författare)
Goksör, Mattias,1975Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg(Swepub:gu)xgokma (författare)
Bengtsson, Jörgen,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jorgenb (författare)
Göteborgs universitetInstitutionen för fysik (GU) (creator_code:org_t)

Av författaren/redakt...: Engström, David, ...; Frank, Anders; Backsten, Jan; Goksör, Mattias, ...; Bengtsson, Jörge ...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.