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Simple and effective method for the analytic description of important optical beams when truncated by finite apertures

机译:简单有效的重要光束被有限光圈截断时的解析描述方法

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摘要

In this paper we present a simple and effective method, based on appropriate superpositions of Bessel-Gauss beams, which in the Fresnel regime is able to describe in analytic form the three-dimensional evolution of important waves as Bessel beams, plane waves, Gaussian beams, and Bessel-Gauss beams when truncated by finite apertures. One of the by-products of our mathematical method is that one can get in a few seconds, or minutes, high-precision results, which normally require quite lengthy numerical simulations. The method works in electromagnetism (optics, microwaves) as well as in acoustics.
机译:在本文中,我们基于贝塞尔-高斯光束的适当叠加提出了一种简单有效的方法,该方法在菲涅尔状态下能够以解析形式描述重要波的三维演化,如贝塞尔光束,平面波,高斯光束,以及被有限孔径截断的贝塞尔高斯光束。我们的数学方法的副产品之一是可以在几秒钟或几分钟内获得高精度结果,这通常需要很长时间的数值模拟。该方法适用于电磁学(光学,微波)以及声学。

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