结构LG光束经像散变换后的轨道角动量

IF 1 Q4 OPTICS Optical Memory and Neural Networks Pub Date : 2023-11-03 DOI:10.3103/S1060992X23050041

M. V. Bretsko, Ya. E. Akimova, A. V. Volyar, S. I. Khalilov, Yu. A. Egorov, A. O. Ivakhnenko

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摘要

本文研究了在像散变换下具有两个控制参数的结构拉盖尔-高斯（sLG）光束。所提出的光束是标准拉盖尔-高斯模式和混合Hermite-Laguerre-高斯模式的结构稳定叠加。通过改变这种光束的相位参数，可以获得在简单散光下稳定的波解。我们还发现，在轨道角动量消失的区域，像散sLG光束的轨道角动量（OAM）出现尖锐的尖峰和凹陷。对于给定的相位参数，突发和凹陷的高度和深度显著超过了普通sLG波束中OAM值的最大值和最小值。

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Orbital Angular Momentum of Structured LG Beams after Astigmatic Transformation

This paper investigates structured Laguerre-Gaussian (sLG) beams with two control parameters under an astigmatic transformation. The presented beams are a structurally stable superposition of the standard Laguerre Gaussian mode and the hybrid Hermite–Laguerre–Gaussian mode. By changing the phase parameter of such beam, one can obtain wave solutions that are stable under simple astigmatism. We also found sharp spikes and dips in orbital angular momentum (OAM) in astigmatic sLG beams in the region where orbital angular momentum vanishes. The height and depth of bursts and dips significantly exceed the maximum and minimum of OAM values in ordinary sLG beams for a given phase parameter.

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来源期刊

Optical Memory and Neural Networks OPTICS-

CiteScore

1.50

自引率

11.10%

发文量

期刊介绍： The journal covers a wide range of issues in information optics such as optical memory, mechanisms for optical data recording and processing, photosensitive materials, optical, optoelectronic and holographic nanostructures, and many other related topics. Papers on memory systems using holographic and biological structures and concepts of brain operation are also included. The journal pays particular attention to research in the field of neural net systems that may lead to a new generation of computional technologies by endowing them with intelligence.