Document Detail

Angular momentum of optical vortex arrays.
MedLine Citation:
PMID:  19503414     Owner:  NLM     Status:  In-Data-Review    
Guided by the aim to construct light fields with spin-like orbital angular momentum (OAM), that is light fields with a uniform and intrinsic OAM density, we investigate the OAM of arrays of optical vortices with rectangular symmetry. We find that the OAM per unit cell depends on the choice of unit cell and can even change sign when the unit cell is translated. This is the case even if the OAM in each unit cell is intrinsic, that is independent of the choice of measurement axis. We show that spin-like OAM can be found only if the OAM per unit cell vanishes. Our results are applicable to the z component of the angular momentum of any x- and y-periodic momentum distribution in the xy plane, and can also be applied other periodic light beams, arrays of rotating massive objects and periodic motion of liquids.
Johannes Courtial; Roberta Zambrini; Mark R Dennis; Mikhail Vasnetsov
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics express     Volume:  14     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2009-06-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  938-49     Citation Subset:  -    
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