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  4. Full phase and amplitude control in computer generated holography
 
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2009
Journal Article
Title

Full phase and amplitude control in computer generated holography

Abstract
We report what we believe to be the first realization of a computer-generated complex-valued hologram recorded in a single film of photoactive polymer. Complex-valued holograms give rise to a diffracted optical field with control over its amplitude and phase. The holograms are generated by a one-step direct laser writing process in which a spatial light modulator (SLM) is imaged onto a polymer film. Temporal modulation of the SLM during exposure controls both the strength of the induced birefringence and the orientation of the fast axis. We demonstrate that complex holograms can be used to impart arbitrary amplitude and phase profiles onto a beam and thereby open new possibilities in the control of optical beams.
Author(s)
Fratz, M.  
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Fischer, P.
Giel, D.M.
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Journal
Optics Letters  
Open Access
DOI
10.24406/publica-r-219607
10.1364/OL.34.003659
File(s)
005.pdf (416.47 KB)
Language
English
Fraunhofer-Institut für Physikalische Messtechnik IPM  
Keyword(s)
  • diffractive optics

  • computer holography

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