Kelly, Damien P. and Monaghan, David S. and Pandey, Nitesh and Hennelly, Bryan M.
Fresnel and Fourier digital holography
architectures: a comparison.
Fringe 2009, 6th International Workshop on Advanced Optical Metrology.
Springer , Heidelberg ; New York, pp. 304-308.
In this manuscript we examine the characteristics of holograms that are
captured using both Fresnel and lens-less Fourier digital holographic
systems. We begin by introducing some of the fundamental equations
describing the intensity distribution captured by the camera. Naturally this
captured intensity will vary depending on whether the system used is a
Fourier or a Fresnel due to the different reference field in each case,
however as we shall see with appropriate numerical processing it is
possible to obtain similar performance from both systems. We discuss a
reconstruction algorithm for changing the focus depth in Fourier
holograms and examine how it effects the twin image and dc terms. A
theoretical comparison with Fresnel holograms is made. Experimental
results are provided to support our analysis. We finish with a brief
||Fresnel; Fourier; digital holography; hologram;
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