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20 September 2007Generation of diffracted free fields and dark hollow beams using spatial filtering
We describe the synthesis of diffraction free beams (DFB) and quasi diffraction free beams (qDFB) with features
easily tunable using a holographic techniques. The hologram plate transmittance is generated by interfering two
zero order Bessel beams with non-common axis. Spatial filtering techniques are implemented by controlling the
kind of illumination during the reconstruction process. The experimental results are for illumination with the
same kind of illumination that the recording process, obtaining a set of diffracting free beams. One of these
propagates quasi-parallel to the surface hologram. For illumination with a plane wave we obtain dark hollow
beam propagating in same direction that reconstruction beam. Experimental results are shown in both cases.
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G. Martinez-Niconoff, J. Munoz-Lopez, G. Hernandez-Orduña, H. H. Sanchez-Hernandez, "Generation of diffracted free fields and dark hollow beams using spatial filtering," Proc. SPIE 6695, Optics and Photonics for Information Processing, 66951A (20 September 2007); https://doi.org/10.1117/12.734907