We aim here to show that azimuthal structuring of the optical beam may be realized by apodizing a spiral zone plate using an azimuthal-modulated Bessel function. Furthermore, we demonstrate that the azimuthal modulation of a Bessel beam may cause its transmittance to take negative values in azimuth. Accordingly, when a diffractive element (herein, spiral zone plate) is apodized by such a modulated Bessel function, its transmittance undergoes an azimuthal phase change. Consequently, the phase change is imposed on a beam passing through the element. This means that the technique enables us to produce a variety of azimuthal beam shapes, such as spiral, ring-lattice, light-arm, and multi-spot beams. In this research, we illustrate how these structures and shapes are produced and tailored. To verify the consequences of the simulation, corresponding experiments were planned.

中文翻译：

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贝塞尔螺旋波带片在复杂光束整形和结构化中的潜力

我们的目的是表明可以通过使用经方位角调制的贝塞尔函数将螺旋波带片变迹来实现光束的方位结构。此外，我们证明了贝塞尔光束的方位调制可能会导致其透射率在方位上取负值。因此，当通过这种调制的贝塞尔函数使衍射元件（在此为螺旋波带片）变迹时，其透射率经历方位角相位变化。因此，相变被施加到穿过元件的光束上。这意味着该技术使我们能够产生各种方位角光束形状，例如螺旋光束，环形光栅，轻臂光束和多点光束。在这项研究中，我们说明了如何生产和定制这些结构和形状。为了验证模拟的结果，