O'Neil, A.T. and Padgett, M. (2001) Transfer of orbital angular momentum to metal particles confined using optical tweezers. Proceedings of the SPIE: The International Society for Optical Engineering, 4274, 177 -182. (doi: 10.1117/12.432508)
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Publisher's URL: http://dx.doi.org/10.1117/12.432508
Abstract
Using Laguerre-Gaussian beams in an inverted optical tweezers geometry we observe that silver particles, 2 mu m in diameter, are confined to an annulus around the outside of the beam. This annulus is situated 4 mu m below the beam waist where the upward scattering force counterbalances gravity. The scattering force results in a transfer of the orbital angular momentum content of the beam to the particle causing it to rotate about the beam axis.
| Item Type: | Articles |
|---|---|
| Additional Information: | Presented at the SPIE Laser Applications in Microelectronic and Optoelectronic Manufacturing VI conference, 22 January 2001, San Jose, CA, USA |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Padgett, Professor Miles |
| Authors: | O'Neil, A.T., and Padgett, M. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Proceedings of the SPIE: The International Society for Optical Engineering |
| Publisher: | SPIE - The International Society for Optical Engineering |
| ISSN: | 0277-786X |
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