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Angular momentum of multimode and polarization patterns

AuthorsZambrini, Roberta ; Barnett, Stephen M.
KeywordsPhysical optics: Electromagnetic optics
Polarization patterns
Multimode beams
Optical tweezers or optical manipulation
Issue Date11-Sep-2007
PublisherOptical Society of America
CitationOptics Express 15, 15214-15227 (2007)
AbstractWe study the mechanical properties of a broad class of multimode and polarization light patterns, resulting from the interference and superposition of waves in helical modes. General local and global properties of energy and angular momentum (AM) are identified, in order to define the conditions to optimize the AM with increasing beam complexity. We show the possibility to engineer independently the local densities of optical AM and energy, opening the possibility of an experimental demonstration of their respective effects in light-matter interaction. Multimode Laguerre-Gaussian beams also allows us to tailor the local spin AM through the Gouy phase.
Description14 pages.-- OCIS codes: (260.2110) Physical optics: Electromagnetic optics; (350.4855) Other areas of optics: Optical tweezers or optical manipulation.-- Final full-text version of the paper available at: http://dx.doi.org/10.1364/OE.15.015214.
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