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Grid-free 3D multip...
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Engström, David,1976Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg
(författare)
Grid-free 3D multiple spot generation with an efficient single-plane FFT-based algorithm
- Artikel/kapitelEngelska2009
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LIBRIS-ID:oai:gup.ub.gu.se/116772
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https://gup.ub.gu.se/publication/116772URI
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https://research.chalmers.se/publication/116772URI
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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.
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Frank, AndersChalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f99anfr
(författare)
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Backsten, Jan
(författare)
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Goksör, Mattias,1975Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg(Swepub:gu)xgokma
(författare)
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Bengtsson, Jörgen,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jorgenb
(författare)
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Göteborgs universitetInstitutionen för fysik (GU)
(creator_code:org_t)
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Ingår i:Optics Express17:12, s. 9989-100001094-4087
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