Acoustic spin and orbital angular momentum using evanescent Bessel beams

被引：5

作者：

Rondon, Irving ^{[1
]}

机构：

[1] Korea Inst Adv Study, Sch Computat Sci, 85 Hoegi Ro, Seoul 0245, South Korea

来源：

JOURNAL OF PHYSICS COMMUNICATIONS | 2021年 / 5卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Poynting vector; acoustic forces; orbital angular momentum; evanescent waves; structured beams;

D O I：

10.1088/2399-6528/ac1e24

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The fundamental properties for the spin and orbital angular momentum are analyzed using acoustic evanescent Bessel beams. The calculations reveal that the transversal spin, the canonical momentum, and the orbital angular momentum are proportional to the ratio l/omega where l is the topological charge and omega the angular frequency. This analysis shows that the complex acoustic Poynting vector and spin density exhibits interesting features related to the electromagnetic case.

引用

页数：9

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