Separation of optical angular momentum flux | |
Yan, Shaohui; Li, Manman; Yao, Baoli | |
作者部门 | 瞬态光学研究室 |
2019-03 | |
发表期刊 | JOURNAL OF OPTICS |
ISSN | 2040-8978;2040-8986 |
卷号 | 21期号:3 |
产权排序 | 1 |
摘要 | We present an approach to separating the angular momentum (AM) flux of monochromatic light into its spin and orbital parts based on a symmetrized AM tensor <(M) over bar >. When considering the AM flux for a light beam through its cross section and that for an outgoing wave through a spherical surface in the far-field zone, the separation gives the desired results: the spin/orbital AM flux equals the integral of spin/orbital AM density times some weighting factor accounting for energy flux. When applied to Bessel beams, the obtained spin and orbital AM fluxes are exactly the same as those given by the paper (2014 New J. Phys. 16 093037) based on the canonical AM tensor separation. Furthermore, from the spin AM flux integral, the divergence-free spin AM tensor <(S) over bar > can be identified. We define the orbital AM tensor to be the difference between the total AM tensor <(M) over bar > and <(S) over bar >. Since <(M) over bar > is divergence-free, the integral for either spin and orbital AM flux, can be made on any closed surface. |
关键词 | angular momentum flux symmetrized AM tensor spin AM tensor |
DOI | 10.1088/2040-8986/ab02d5 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000459148500001 |
出版者 | IOP PUBLISHING LTD |
EI入藏号 | 20191506772872 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/31174 |
专题 | 瞬态光学研究室 |
通讯作者 | Yan, Shaohui; Yao, Baoli |
作者单位 | Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Yan, Shaohui,Li, Manman,Yao, Baoli. Separation of optical angular momentum flux[J]. JOURNAL OF OPTICS,2019,21(3). |
APA | Yan, Shaohui,Li, Manman,&Yao, Baoli.(2019).Separation of optical angular momentum flux.JOURNAL OF OPTICS,21(3). |
MLA | Yan, Shaohui,et al."Separation of optical angular momentum flux".JOURNAL OF OPTICS 21.3(2019). |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Separation of optica(641KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 请求全文 |
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