Journal
OPTICS COMMUNICATIONS
Volume 285, Issue 1, Pages 24-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2011.08.076
Keywords
Image projection; Fractional Fourier transformation; Holographic displays; Phase retrieval
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Funding
- National Key Basic Research Program of China [2010CB327705]
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A new method of image projection based on fractional Fourier transformation is presented. This method can project an image at any distance after a lens plane. We use a modified Gerschberg-Saxton (GS) iteration algorithm to compute a phase-only hologram. The amplitude distributions both on the hologram plane and image plane are restricted while allowing their phase distributions to drift into an optimum value. The quality of the image projected by fractional Fourier hologram is close to the image projected by Fourier hologram. The RMS error between the projected image and the constrained image is computed in our experiment. A comparison in flexibility of the two projection methods is also discussed. (C) 2011 Elsevier B.V. All rights reserved.
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