OSA's Digital Library

Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 15, Iss. 2 — Feb. 1, 1998
  • pp: 524–527

Electromagnetic energy in dispersive spheres

R. Ruppin  »View Author Affiliations

JOSA A, Vol. 15, Issue 2, pp. 524-527 (1998)

View Full Text Article

Enhanced HTML    Acrobat PDF (192 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Analytic expressions for the time-averaged electromagnetic energy within a dispersive and absorbing sphere on which a plane wave is incident are derived. Numerical results are presented for diatomic ionic crystal spheres and for metallic, nearly free-electron-like spheres. It is found that the stored energy exhibits resonant enhancement near resonances of the sphere’s extinction cross section. In the Rayleigh region the energy increase at resonance may amount to more than three orders of magnitude. The energy formula is applied to the calculation of the energy transport velocity in a disordered medium containing dispersive spheres.

© 1998 Optical Society of America

Original Manuscript: May 27, 1997
Manuscript Accepted: August 5, 1997
Published: February 1, 1998

R. Ruppin, "Electromagnetic energy in dispersive spheres," J. Opt. Soc. Am. A 15, 524-527 (1998)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. Bott, W. Zdunkowski, “Electromagnetic energy within dielectric spheres,” J. Opt. Soc. Am. A 4, 1361–1365 (1987). [CrossRef]
  2. M. P. van Albada, B. A. van Tiggelen, A. Lagendijk, A. Tip, “Speed of propagation of classical waves in strongly scattering media,” Phys. Rev. Lett. 66, 3132–3135 (1991). [CrossRef] [PubMed]
  3. J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941).
  4. R. Loudon, “The propagation of electromagnetic energy through an absorbing dielectric,” J. Phys. A 3, 233–245 (1970). [CrossRef]
  5. G. Mie, “Beitrag zur Optik truber Medien, speziell kolloidaler Metallosungen,” Ann. Phys. 25, 377–445 (1908). [CrossRef]
  6. H. C. van de Hulst, Light Scattering by Small Particles (Wiley, New York, 1957).
  7. H. Bilz, L. Genzel, M. Happ, “Zur Ultrarotdispersion der Alkali-Halogenide,” Z. Phys. 160, 535–553 (1960). [CrossRef]
  8. R. Fuchs, K. L. Kliewer, “Optical modes of vibration in an ionic crystal sphere,” J. Opt. Soc. Am. 58, 319–330 (1968). [CrossRef]
  9. R. Ruppin, R. Englman, “Optical phonons of small crystals,” Rep. Prog. Phys. 33, 149–196 (1970). [CrossRef]
  10. H. Fröhlich, Theory of Dielectrics (Clarendon, Oxford, 1949).
  11. J. C. Sutherland, E. T. Arakawa, R. N. Hamm, “Optical properties of sodium in the vacuum ultraviolet,” J. Opt. Soc. Am. 57, 645–650 (1967). [CrossRef]
  12. B. A. van Tiggelen, A. Lagendijk, M. P. van Albada, A. Tip, “Speed of light in random media,” Phys. Rev. B 45, 12233–12243 (1992). [CrossRef]
  13. Y. Kuga, A. Ishimaru, D. Rice, “Velocity of coherent and incoherent electromagnetic waves in a dense strongly scattering medium,” Phys. Rev. B 48, 13155–13158 (1993). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited