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Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford
Nieminen, Timo A. (2004-01-01) Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford. Optics Communications, 235 1-3: 227-229.
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| Name |
Description |
MIMEType |
Size |
Downloads |
preprint.pdf
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preprint.pdf |
application/pdf |
59.75KB |
275 |
| Author(s) |
Nieminen, Timo A.
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| Title |
Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford
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| Journal name |
Optics Communications
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| Publication date |
2004-01-01
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| Volume number |
235
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| Issue number |
1-3
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| ISSN |
0030-4018
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| Start page |
227
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| End page |
229
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| Total pages |
3
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| Editor(s) |
F Abeles
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| Place of publication |
Netherlands
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| Publisher |
Elsevier BV North-Holland
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| Collection year |
2004
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| Language |
eng
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| Subject |
240504 Electrostatics and Electrodynamics
240400 Optical Physics
C1
780102 Physical sciences
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| Abstract |
The core theorem on which the above paper is centred - that a perfectly conducting body of revolution absorbs no angular momentum from an axisymmetric electromagnetic wave field - is in fact a special case of a more general result in electromagnetic scattering theory. In addition, the scaling of the efficiency of transfer of angular momentum to an object with the wavelength and object size merits further discussion. Finally, some comments are made on the choice of terminology and the erroneous statement that a circularly polarized plane wave does not carry angular momentum.
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| Keyword(s) |
optical torque
electromagnetic scattering
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