Journal
JOURNAL OF MODERN OPTICS
Volume 57, Issue 14-15, Pages 1339-1343Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500341003654427
Keywords
optical angular momentum
Categories
Funding
- UK Engineering and Physical Sciences Research Council (EPSRC)
- Czech Republic [MSM 684077039, LC06002]
- Royal Society
- Wolfson Foundation
- EPSRC [EP/G011567/1] Funding Source: UKRI
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The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known. We present a simple analysis of the problems involved in defining spin and orbital angular momenta for electromagnetic fields and discuss some of the remaining challenges. Crucial to our investigation is the duplex symmetry between the electric and magnetic fields.
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