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Fundamental role of the retarded potential in the electrodynamics of superluminal sources.

Abstract:

We calculate the gradient of the radiation field generated by a polarization current with a superluminally rotating distribution pattern and show that the absolute value of this gradient increases as R(7/2) with distance R, within the sharply focused subbeams that constitute the overall radiation beam from such a source. In addition to supporting the earlier finding that the azimuthal and polar widths of these subbeams become narrower (as R(-3) and R(-1), respectively) with distance from the ...

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Publication status:
Published

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Publisher copy:
10.1364/josaa.25.000543

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Role:
Author
Publisher:
Optical Society of American (OSA)
Journal:
Journal of the Optical Society of America. A, Optics, image science, and vision
Volume:
25
Issue:
3
Pages:
543-557
Publication date:
2008-03-05
DOI:
EISSN:
1520-8532
ISSN:
1084-7529
URN:
uuid:23111443-44a1-405d-bc93-1517675682b7
Source identifiers:
25909
Local pid:
pubs:25909
Language:
English

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