Pan, Detao and Chew, Khian-Hooi and Wu, Yan and Chen, Rui-Pin (2022) Conversions of linear-circular polarizations and spin-orbital angular momentums in a focused vector vortex beam with fractional topological charges. OPTIK, 252. ISSN 0030-4026, DOI https://doi.org/10.1016/j.ijleo.2021.168473.
Full text not available from this repository.Abstract
We perform theoretical and experimental studies on the tight focusing properties of a vector vortex beam with fractional order topology charges. The fractional-order vector vortex optical fields (FO-VVOF) are experimentally generated by using the 4f system and the hologram technology. In comparison to the integral-order vortex, the 3-dimensional (3D) field distributions of FO-VVOF in the focal volume exhibit unique vectorial structure characteristics. The conversions between the linear and the circular polarizations (spin angular momentum) occur in a tight focusing fractional vortex. Furthermore, the hybrid spin-orbital angular momentum conversions in the longitudinal component in a tight focusing FO-VVOF lead to the interesting distributions of the orbital angular momentum. The dynamic conversions closely depend on the initial topology charge numbers and polarization distributions. The underlying physics of this unique phenomenon is discussed in detail. These results may have potential applications in particle micro manipulation, quantum information processing and optical field manipulation.
| Item Type: | Article |
|---|---|
| Funders: | National Natural Science Foundation of China (NSFC) [Grant No: 11874323; 11574271], Zhejiang Pro-vincial public welfare technology application research project of China [Grant No: LGG21A040003] |
| Uncontrolled Keywords: | Fractional-order vector vortex optical field; Spin-orbital angular momentum conversions; Vortex; Polarization |
| Subjects: | Q Science > QC Physics R Medicine > RE Ophthalmology |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 18 Sep 2023 01:28 |
| Last Modified: | 27 Nov 2024 02:44 |
| URI: | http://eprints.um.edu.my/id/eprint/43051 |
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