Local phase structure of wave dislocation lines: twist and twirl
Dennis, M.R. (2004) Local phase structure of wave dislocation lines: twist and twirl. Journal of Optics A: Pure and Applied Optics, 6, (5), S202-S208. (doi:10.1088/1464-4258/6/5/011).
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Original Publication URL: http://dx.doi.org/10.1088/1464-4258/6/5/011
Description/Abstract
Generic wave dislocations (phase singularities, optical vortices) in three dimensions have anisotropic local structure, which is analysed, with emphasis on the twist of surfaces of equal phase along the singular line, and the rotation of the local anisotropy ellipse (twirl). Various measures of twist and twirl are compared in specific examples, and a theorem is found relating the (quantized) topological twist and twirl for a closed dislocation loop with the anisotropy C line index threading the loop.
| Item Type: | Article |
|---|---|
| ISSNs: | 1464-4258 (print) |
| Related URLs: | |
| Keywords: | phase singularity, optical vortex, screw dislocation, topology |
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics |
| Item ID: | 29389 |
| Date Deposited: | 11 May 2006 |
| Last Modified: | 28 Jun 2012 10:14 |
| Contributors: | Dennis, M.R. (Author) |
| Date: | 2004 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/29389 |
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