Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford

Nieminen, Timo A. (2004) Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford. Optics Communications, 235 1-3: 227-229. doi:10.1016/j.optcom.2004.02.066

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Author Nieminen, Timo A.
Title Comment on "Geometric Absorption of Electromagnetic Angular Momentum", C. Konz, G. Benford
Journal name Optics Communications   Check publisher's open access policy
ISSN 0030-4018
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1016/j.optcom.2004.02.066
Open Access Status File (Author Post-print)
Volume 235
Issue 1-3
Start page 227
End page 229
Total pages 3
Editor F Abeles
Place of publication Netherlands
Publisher Elsevier BV North-Holland
Collection year 2004
Language eng
Subject 240504 Electrostatics and Electrodynamics
240400 Optical Physics
780102 Physical sciences
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.
Keyword optical torque
electromagnetic scattering
References [1] C. Konz, G. Benford, Opt. Commun. 226 (2003) 249-254. [2] P.C. Waterman, Phys. Rev. D 3 (1971) 825-839. [3] A.I. Bishop, T.A. Nieminen, N.R. Heckenberg, H. Rubinsztein-Dunlop, Phys. Rev. A 68 (2003) 033802. [4] R.I. Khrapko, Am. J. Phys. 69 (2001) 405. [5] J.H. Poynting, Proc. R. Soc. A 82 (1909) 560-567. [6] R.A. Beth, Phys. Rev. 50 (1936) 115-125. [7] R.P. Feynman, R.B. Leighton, M. Sands. The Feynman Lectures on Physics Volume III. Addison-Wesley, Reading, MA, 1965, p. 17-10. [8] L. Allen, M.J. Padgett, Am. J. Phys. 70 (2002) 567-568. [9] V.B. Yurchenko, Am. J. Phys. 70 (2002) 568-569. [10] F.S. Chute, IEEE Trans. Antennas Propagat. 15 (1967), 585-587.
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Created: Thu, 08 Apr 2004, 10:00:00 EST by Timo Nieminen on behalf of School of Mathematics & Physics