Orbital angular momentum of structured vortex beams induced by intensity singularity
A new category of optical orbital angular momentum (OAM) associated with intensity singularity independent of phase singularity is predicted, and a kind of structured vortex beams (VBs) with arbitrary transverse shapes is demonstrated. A universal inverse-designed caustic scheme is developed for gen...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/182559 |
| _version_ | 1824454011531558912 |
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| author | Hu, Juntao Wei, Wenjun Li, Xinzhong Shen, Yijie Zhan, Qiwen Li, Guixin Qian, Yixian |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Hu, Juntao Wei, Wenjun Li, Xinzhong Shen, Yijie Zhan, Qiwen Li, Guixin Qian, Yixian |
| author_sort | Hu, Juntao |
| collection | NTU |
| description | A new category of optical orbital angular momentum (OAM) associated with intensity singularity independent of phase singularity is predicted, and a kind of structured vortex beams (VBs) with arbitrary transverse shapes is demonstrated. A universal inverse-designed caustic scheme is developed for generating such structured VBs which exhibit crucial intensity gradient and phase gradient. Additionally, they exhibit nonuniformly distributed phase gradients, capable of driving particles accelerately along a desired trajectory. Particle trapping experiments validate that such structured VBs without phase singularity drive the trapped particles to move along predefined trajectories. The idea not only provides an approach for generating and manipulating OAM from intensity singularity, enabling to spur further independent insights into the generation of OAM, but also paves the way for optically driving and accelerating particles along a desired trajectory. |
| first_indexed | 2025-02-19T03:15:32Z |
| format | Journal Article |
| id | ntu-10356/182559 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:15:32Z |
| publishDate | 2025 |
| record_format | dspace |
| spelling | ntu-10356/1825592025-02-10T01:54:20Z Orbital angular momentum of structured vortex beams induced by intensity singularity Hu, Juntao Wei, Wenjun Li, Xinzhong Shen, Yijie Zhan, Qiwen Li, Guixin Qian, Yixian School of Physical and Mathematical Sciences School of Electrical and Electronic Engineering Centre for Disruptive Photonic Technologies (CDPT) The Photonics Institute Engineering Optical caustic Optical trapping A new category of optical orbital angular momentum (OAM) associated with intensity singularity independent of phase singularity is predicted, and a kind of structured vortex beams (VBs) with arbitrary transverse shapes is demonstrated. A universal inverse-designed caustic scheme is developed for generating such structured VBs which exhibit crucial intensity gradient and phase gradient. Additionally, they exhibit nonuniformly distributed phase gradients, capable of driving particles accelerately along a desired trajectory. Particle trapping experiments validate that such structured VBs without phase singularity drive the trapped particles to move along predefined trajectories. The idea not only provides an approach for generating and manipulating OAM from intensity singularity, enabling to spur further independent insights into the generation of OAM, but also paves the way for optically driving and accelerating particles along a desired trajectory. Ministry of Education (MOE) Nanyang Technological University This research was supported by National Natural Science Foundation of China (Nos. 12474301 and 12274116), Nanyang Technological University Start Up Grant and Singapore Ministry of Education (MOE) AcRF Tier1 Grant (No. RG157/23), and Natural Science Foundation of Zhejiang Province (No. LXZ22A040001). 2025-02-10T01:54:20Z 2025-02-10T01:54:20Z 2024 Journal Article Hu, J., Wei, W., Li, X., Shen, Y., Zhan, Q., Li, G. & Qian, Y. (2024). Orbital angular momentum of structured vortex beams induced by intensity singularity. Laser and Photonics Reviews, 2401064-. https://dx.doi.org/10.1002/lpor.202401064 1863-8880 https://hdl.handle.net/10356/182559 10.1002/lpor.202401064 2-s2.0-85211902428 2401064 en RG157/23 NTU SUG Laser and Photonics Reviews © 2024 Wiley-VCH GmbH. All rights reserved. |
| spellingShingle | Engineering Optical caustic Optical trapping Hu, Juntao Wei, Wenjun Li, Xinzhong Shen, Yijie Zhan, Qiwen Li, Guixin Qian, Yixian Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title | Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title_full | Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title_fullStr | Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title_full_unstemmed | Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title_short | Orbital angular momentum of structured vortex beams induced by intensity singularity |
| title_sort | orbital angular momentum of structured vortex beams induced by intensity singularity |
| topic | Engineering Optical caustic Optical trapping |
| url | https://hdl.handle.net/10356/182559 |
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