Light beams with fractional orbital angular momentum and their vortex structure
Gotte, J.B. and O'Holleran, K. and Preece, D. and Flossmann, F. and Franke-Arnold, S. and Barnett, S.M. and Padgett, M.J. (2008) Light beams with fractional orbital angular momentum and their vortex structure. Optics Express, 16 (2). pp. 993-1006. ISSN 1094-4087
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Light emerging from a spiral phase plate with a non-integer phase step has a complicated vortex structure and is unstable on propagation. We generate light carrying fractional orbital angular momentum (OAM) not with a phase step but by a synthesis of Laguerre-Gaussian modes. By limiting the number of different Gouy phases in the superposition we produce a light beam which is well characterised in terms of its propagation. We believe that their structural stability makes these beams ideal for quantum information processes utilising fractional OAM states.
| Author(s): | Gotte, J.B., O'Holleran, K., Preece, D., Flossmann, F., Franke-Arnold, S., Barnett, S.M. and Padgett, M.J. | Item type: | Article |
|---|---|
| ID code: | 19830 |
| Keywords: | light beams, fractional orbital angular momentum, vortex structure, Physics, Atomic and Molecular Physics, and Optics |
| Subjects: | Science > Physics |
| Department: | Faculty of Science > Physics |
| Depositing user: | Strathprints Administrator |
| Date deposited: | 01 Jun 2010 11:33 |
| Last modified: | 22 Nov 2019 05:08 |
| URI: | https://strathprints.strath.ac.uk/id/eprint/19830 |
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