Digital holography by two reference beams

Zsolt Papp; Janos Kornis

doi:10.1117/12.427026

8 May 2001 Digital holography by two reference beams

Zsolt Papp, Janos Kornis

Proceedings Volume 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001); (2001) https://doi.org/10.1117/12.427026
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '01), 2001, Yokohama, Japan

Abstract

The three-dimensional image formation can be managed by digital holography, where the holograms can be recorded by a CCD camera. As a law resolution of a CCD device, just a small angle between the object beam and the reference beam is allowed. This is the reason why the in-line phase- shifting digital holography is used to avoid the mentioned problem (the zero order beam can be neglected, too). In this paper it is proposed to use an arrangement of two reference beams recording the interference patterns of the object beam and the two reference beams by a CCD matrix. The phase distribution of the object wave can be recovered by a simple algorithm avoiding the uncertainty of the phase. The complex amplitude is used to reconstruct the image of the object by a computer applying the Fresnel transformation.

Citation Download Citation

Zsolt Papp and Janos Kornis "Digital holography by two reference beams", Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); https://doi.org/10.1117/12.427026

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