Angular momentum properties of a circularly polarized vortex beam in the paraxial optical systems
The angular momentum (AM) properties of circularly polarized vortex beams (CPVBs) in two paraxial optical systems [free space and a gradient-index (GRIN) fiber] are demonstrated. The transverse light intensity, the longitudinal light intensity, the phase of the longitudinal electric field, the kinetic momentum, the total spin AM (SAM), the transverse-type SAM (<i>t</i>-SAM), the longitudinal-type SAM (<i>l</i>-SAM), and the orbital angular momentum (OAM) of CPVBs in the two paraxial optical systems are characterized. Spin-orbit coupling of CPVBs is studied during propagation in free space and in a GRIN fiber. When the OAM and the SAM of a CPVB have the same direction of rotation and when they have opposite directions of rotation, the spin-orbit coupling exhibits different characteristics in free space and in the GRIN fiber.
Authors
- Xiaojin Yin (ORCID: https://orcid.org/0000-0002-8293-7133)
- Jing Wang (ORCID: https://orcid.org/0000-0001-7199-4784)
- Jinhong Liu (ORCID: https://orcid.org/0000-0002-8910-2403)
- Li Yu (ORCID: https://orcid.org/0000-0003-4134-585X)
- Jinhong Li (ORCID: https://orcid.org/0000-0001-9242-4414)
- Guoliang Jin (ORCID: https://orcid.org/0000-0001-7902-0861)
Institutions
- City University of Hong Kong (HK)
- Taiyuan Institute of Technology (CN)
Publication Details
- Journal
- Journal of the Optical Society of America A
- Published
- 2024-10-11
- DOI
- https://doi.org/10.1364/josaa.541429
- Citations
- 2
- Primary Topic
- Orbital Angular Momentum in Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.68
Funders
- National Natural Science Foundation of China