Abstract
The features of e-m inhomogeneous polarized field, which concern an angular momentum, are considered. It is shown that the e-m field produced by differently polarized optical beams may carry orbital angular momentum. Such angular momentum arises in field area with the point of circular polarization (C -point). Superposition of relatively simple orthogonally polarized beams is considered. Experimental results of particles capturing by such focused beam are presented. On the other hand, in the vicinity of s -contour (field line with linear polarization) spin angular momentum vanishes. At the same time such angular momentum appears when superposition of beams with different wave-length is considered.
Original language | English (US) |
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Article number | 597204 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 5972 |
DOIs | |
State | Published - 2005 |
Externally published | Yes |
Event | Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies II - Bucharest, Romania Duration: Nov 24 2004 → Nov 26 2004 |
Keywords
- Angular momentum
- C-point
- Orbital angular momentum
- Polarization
- Polarization singularities
- S-contour
- Spin angular momentum
- Vortex
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering