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Optical Engineering

Implementation of Fresnel full complex-amplitude digital holograms
Author(s): Luiz Goncalves Neto; Patricia S.P. Cardona; Giuseppe Antonio Cirino; Ronaldo Domingues Mansano; Patrick B. Verdonck
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Paper Abstract

The use of diffractive optical elements (DOEs) is increasing for several industrial applications, such as beam shaping and optical filtering. Most elements modulate the phase of the incoming light or its amplitude, but not both. To overcome this limitation, we developed a full complex-amplitude modulation DOE. We employed well-established integrated circuit fabrication steps to fabricate the devices at relatively low cost and with high precision. Using this approach, the new element's optical performances are improved even for near-field operations. With this device it is possible to obtain the total control of the zeroth order transmitted light, resulting in low-noise reconstructed images.

Paper Details

Date Published: 1 November 2004
PDF: 10 pages
Opt. Eng. 43(11) doi: 10.1117/1.1805566
Published in: Optical Engineering Volume 43, Issue 11
Show Author Affiliations
Luiz Goncalves Neto, Univ. de São Paulo (Brazil)
Patricia S.P. Cardona, Univ. de Sao Paulo (Brazil)
Giuseppe Antonio Cirino, PPA Portas e Alarmes Ltd. (Brazil)
Ronaldo Domingues Mansano, Univ. de São Paulo (Brazil)
Patrick B. Verdonck, Univ. de São Paulo (Brazil)

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