We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Separation of spin angular momentum in space-variant linearly polarized beam.
- Authors
Chen, Hao; Yu, Zhongliang; Hao, Jingjing; Chen, Zhaozhong; Xu, Ji; Ding, Jianping; Wang, Hui-Tian
- Abstract
We show that the spin angular momentum (SAM) flux in a space-variant linearly polarized beam can be separated in the focal plane. Such a beam carries only orbital angular momentum (OAM) and develops a net SAM flux upon focusing. The radial splitting of the SAM flux density is mediated by the phase vortex (or OAM) and can be controlled by the topological charge of the phase vortex. Optical trapping experiments verify the separation of the SAM flux density. The proposed approach enriches the manipulation of the angular momentum of light fields and inspires more designs of focus engineering, which would benefit optical micromanipulation of microscopic particles.
- Subjects
POLARIZED beams (Nuclear physics); ANGULAR momentum (Nuclear physics); TOPOLOGY; MICRURGY; PARTICLE beams
- Publication
Applied Physics B: Lasers & Optics, 2014, Vol 114, Issue 3, p355
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-013-5523-1