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24 August 2009 Superpositions of higher-order Bessel beams and nondiffracting speckle fields
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Abstract
In this paper we present a mechanism for the generation of the superposition of higher-order Bessel beams, which implements a ring slit aperture and spatial light modulator (SLM). Our experimental technique is also adapted to generate nondiffracting speckle fields. We report on illuminating a ring slit aperture with light which has an azimuthal phase dependence, such that the field produced is a superposition of two higher-order Bessel beams. In the case that the phase dependence of the light illuminating the ring slit aperture is random, a nondiffracting speckle field is produced. The experimentally produced fields are in good agreement with those calculated theoretically.
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Angela Dudley, Ruslan Vasilyeu, Andrew Forbes, Nikolai Khilo, Petr Ropot, Vladimir Belyi, and Nikolai Kazak "Superpositions of higher-order Bessel beams and nondiffracting speckle fields", Proc. SPIE 7430, Laser Beam Shaping X, 74300A (24 August 2009); https://doi.org/10.1117/12.826884
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