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An introduction is given to the concepts of the spin and orbital angular momentum of light beams. Both spin and orbital angular momentum can be transferred from a light beam to particles held within optical tweezers, so forming an optical spanner. Each also give rise to a frequency shift when the light beam is rotated. This arises because quarter or half-wave plates and pi/2 or pi mode converters play equivalent roles for spin and orbital angular momentum respectively.
|Glasgow Author(s) Enlighten ID:||Padgett, Professor Miles|
|Authors:||Padgett, M., and Allen, L.|
|College/School:||College of Science and Engineering > School of Physics and Astronomy|
|Journal Name:||Optical and Quantum Electronics|
|Journal Abbr.:||Opt. Quantum Electron.|