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Kevin J. Parker and Miguel A. Alonso
The free space solution to the wave equation in spherical coordinates is well known as a separable product of functions. Re-examination of these functions, particularly the sums of spherical Bessel and harmonic functions, reveals behaviors which can prod...
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Nikita Stsepuro, Pavel Nosov, Maxim Galkin, George Krasin, Michael Kovalev and Sergey Kudryashov
This paper investigated the diffraction of a Gaussian laser beam on a binary mask and a refractive axicon. The principles of the formation of a zero-order Bessel beam with sharp drops of the axial field intensity edges were discussed. A laser optical sys...
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Minghui Zhang, Xianlong Liu, Lina Guo, Lin Liu and Yangjian Cai
The intensity distribution of a partially coherent beam with a nonconventional correlation function, named the multi-Gaussian Schell-model (MGSM) beam, focused by an axicon was investigated in detail. Our numerical results showed that an optical needle w...
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Hao Zhang, Xinzhong Li, Haixiang Ma, Miaomiao Tang, Hehe Li and Yangjian Cai
We report on a novel optical vortex, named as centrosymmetric optical vortex (CSOV), which is constructed via four conventional optical vortices (OVs) with different topological charges (TCs). The orbital angular momentum (OAM) density satisfies centrosy...
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