Spin–momentum properties in the gradient-index fiber

Xiaojin Yin; Yu Li; Guoliang Jin; Jinhong Liu; Jing Wang; Jinhong Li

doi:10.1016/j.optcom.2024.130839

Spin–momentum properties in the gradient-index fiber

Xiaojin Yin^*
, Yu Li
, Guoliang Jin
, Jinhong Liu
, Jing Wang
, Jinhong Li^*

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

The vector characteristics of the kinetic momentum, spin angular momentum (SAM), and light field of a radially polarized vortex beam (RPVB) in the radial gradient-index (GRIN) fiber are analyzed using a unified methodology based on the generalized Huygens-Fresnel principle and the spin-momentum relationship. The kinetic momentum, SAM, transverse-type spin (t-SAM), longitudinal-type spin (l-SAM) and light field contain parallel and perpendicular components to the optical axis in the GRIN fiber. Moreover, the optical spin skyrmion from the SAM, t-SAM, and l-SAM can be observed at the semi-focal plane and the focal plane of the GRIN fiber. To the best of our knowledge, this is the first confirmation of spin skyrmions in the GRIN fiber. The analysis of spin-momentum properties of an RPVB in the GRIN fiber combined with the generalized Huygens-Fresnel principle and the spin-momentum relationship can be applied in describing the vector properties of transmission in atmospheric and optical systems. © 2024 Elsevier B.V.

Original language	English
Article number	130839
Journal	Optics Communications
Volume	569
Online published	4 Jul 2024
DOIs	https://doi.org/10.1016/j.optcom.2024.130839
Publication status	Published - 15 Oct 2024

Access Output

10.1016/j.optcom.2024.130839

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{c3d5a1b3335b4072856fee02693b9c75,

title = "Spin–momentum properties in the gradient-index fiber",

abstract = "The vector characteristics of the kinetic momentum, spin angular momentum (SAM), and light field of a radially polarized vortex beam (RPVB) in the radial gradient-index (GRIN) fiber are analyzed using a unified methodology based on the generalized Huygens-Fresnel principle and the spin-momentum relationship. The kinetic momentum, SAM, transverse-type spin (t-SAM), longitudinal-type spin (l-SAM) and light field contain parallel and perpendicular components to the optical axis in the GRIN fiber. Moreover, the optical spin skyrmion from the SAM, t-SAM, and l-SAM can be observed at the semi-focal plane and the focal plane of the GRIN fiber. To the best of our knowledge, this is the first confirmation of spin skyrmions in the GRIN fiber. The analysis of spin-momentum properties of an RPVB in the GRIN fiber combined with the generalized Huygens-Fresnel principle and the spin-momentum relationship can be applied in describing the vector properties of transmission in atmospheric and optical systems. {\textcopyright} 2024 Elsevier B.V.",

author = "Xiaojin Yin and Yu Li and Guoliang Jin and Jinhong Liu and Jing Wang and Jinhong Li",

year = "2024",

month = oct,

day = "15",

doi = "10.1016/j.optcom.2024.130839",

language = "English",

volume = "569",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Spin–momentum properties in the gradient-index fiber

AU - Yin, Xiaojin

AU - Li, Yu

AU - Jin, Guoliang

AU - Liu, Jinhong

AU - Wang, Jing

AU - Li, Jinhong

PY - 2024/10/15

Y1 - 2024/10/15

N2 - The vector characteristics of the kinetic momentum, spin angular momentum (SAM), and light field of a radially polarized vortex beam (RPVB) in the radial gradient-index (GRIN) fiber are analyzed using a unified methodology based on the generalized Huygens-Fresnel principle and the spin-momentum relationship. The kinetic momentum, SAM, transverse-type spin (t-SAM), longitudinal-type spin (l-SAM) and light field contain parallel and perpendicular components to the optical axis in the GRIN fiber. Moreover, the optical spin skyrmion from the SAM, t-SAM, and l-SAM can be observed at the semi-focal plane and the focal plane of the GRIN fiber. To the best of our knowledge, this is the first confirmation of spin skyrmions in the GRIN fiber. The analysis of spin-momentum properties of an RPVB in the GRIN fiber combined with the generalized Huygens-Fresnel principle and the spin-momentum relationship can be applied in describing the vector properties of transmission in atmospheric and optical systems. © 2024 Elsevier B.V.

AB - The vector characteristics of the kinetic momentum, spin angular momentum (SAM), and light field of a radially polarized vortex beam (RPVB) in the radial gradient-index (GRIN) fiber are analyzed using a unified methodology based on the generalized Huygens-Fresnel principle and the spin-momentum relationship. The kinetic momentum, SAM, transverse-type spin (t-SAM), longitudinal-type spin (l-SAM) and light field contain parallel and perpendicular components to the optical axis in the GRIN fiber. Moreover, the optical spin skyrmion from the SAM, t-SAM, and l-SAM can be observed at the semi-focal plane and the focal plane of the GRIN fiber. To the best of our knowledge, this is the first confirmation of spin skyrmions in the GRIN fiber. The analysis of spin-momentum properties of an RPVB in the GRIN fiber combined with the generalized Huygens-Fresnel principle and the spin-momentum relationship can be applied in describing the vector properties of transmission in atmospheric and optical systems. © 2024 Elsevier B.V.

UR - https://www.scopus.com/pages/publications/85197546600

UR - https://www.scopus.com/pages/publications/85197546600#tab=impact

U2 - 10.1016/j.optcom.2024.130839

DO - 10.1016/j.optcom.2024.130839

M3 - RGC 21 - Publication in refereed journal

SN - 0030-4018

VL - 569

JO - Optics Communications

JF - Optics Communications

M1 - 130839

ER -

Spin–momentum properties in the gradient-index fiber

Abstract

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this