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Courtial, J., and Padgett, M. (2000) Limit to the orbital angular momentum per unit energy in a light beam that can be focused onto a small particle. Optics Communications, 173 (1-6). 269 -274. ISSN 0030-4018 (doi:10.1016/S0030-4018(99)00619-7)
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Publisher's URL: http://dx.doi.org/10.1016/S0030-4018(99)00619-7
Abstract
Within a ray-optical approximation we show that there is a limit to the orbital angular momentum per unit energy that can be focused onto a small particle. This limit depends solely on the geometry of the focusing optics and the size of the particle and is independent of the wavelength of the light.
| Item Type: | Article |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s): | Padgett, Prof Miles |
| Authors: | Courtial, J., and Padgett, M. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Optics Communications |
| ISSN: | 0030-4018 |
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