Applied Physics B

, Volume 84, Issue 1–2, pp 125–129 | Cite as

Spheroidal particle plasmons in amplifying media

  • A.Y. Smuk
  • N.M. LawandyEmail author


The effect of a surrounding gain medium on the localized surface plasmon resonance in spheroidal metal particles is analyzed in the quasi-static limit of the Maxwell equations. It is shown that the gain required to create a singularity in the dynamic polarizability of the particle is significantly lower for non-spherical spheroids than for spheres, and can be as low as several hundred inverse centimeters for noble metals in the near infrared region of the spectrum. Resonant aspect ratios and gain values are calculated as a function of frequency for various metals. The use of non-spherically shaped nano-particles, along with gains achievable in semiconductors and dyes, can result in surface enhanced Raman scattering (SERS) signals which are dramatically enhanced.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M. Faraday, Philos. Trans. R. Soc. London 147, 145 (1857)ADSCrossRefGoogle Scholar
  2. 2.
    O. Masala, R. Seshadri, Ann. Rev. Mater. Res. 34, 41 (2004)ADSCrossRefGoogle Scholar
  3. 3.
    A.J. Haes, R.P. Van Duyne, Exp. Rev. Mod. Diagn. 4, 527 (2004)CrossRefGoogle Scholar
  4. 4.
    M.P. Nezhad, K. Tetz, Y. Fainman, Opt. Express 12, 4072 (2004)ADSCrossRefGoogle Scholar
  5. 5.
    J. Seidel, S. Grafström, L. Eng, Phys. Rev. Lett. 94, 177401 (2005)ADSCrossRefGoogle Scholar
  6. 6.
    D.J. Bergman, M.I. Stockman, Phys. Rev. Lett. 90, 027402 (2003)ADSCrossRefGoogle Scholar
  7. 7.
    K. Li, X. Li, M.I. Stockman, D.J. Bergman, Phys. Rev. B 71, 115409 (2005)ADSCrossRefGoogle Scholar
  8. 8.
    N.M. Lawandy, Appl. Phys. Lett. 85, 5040 (2004)ADSCrossRefGoogle Scholar
  9. 9.
    N.M. Lawandy, Proc. SPIE 5924, 105 (2005)ADSGoogle Scholar
  10. 10.
    M. Kerker, D.S. Wang, H. Chew, Appl. Opt. 19, 4159 (1980)ADSCrossRefGoogle Scholar
  11. 11.
    C.F. Bohren, D.R. Huffman, Absorption and Scattering of Light by Small Particles (Wiley-Interscience, New York, 1998)CrossRefGoogle Scholar
  12. 12.
    M. Born, E. Wolf, Principles of Optics, 6th edn. (Pergamon Press, New York, 1980)Google Scholar
  13. 13.
    M. Meier, A. Wokaun, Opt. Lett. 8, 581 (1983)ADSCrossRefGoogle Scholar
  14. 14.
    A.D. Rakić, A.B. Djurišić, J.M. Elazar, M.L. Majewski, Appl. Opt. 37, 5271 (1998)ADSCrossRefGoogle Scholar
  15. 15.
    K. Domen, K. Kondo, A. Kuramata, T. Tanahashi, Appl. Phys. Lett. 69, 94 (1996)ADSCrossRefGoogle Scholar
  16. 16.
    W.W. Chow, A. Knorr, S.W. Koch, Appl. Phys. Lett. 67, 754 (1995)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Spectra Systems CorporationEast ProvidenceUSA
  2. 2.Solaris NanosciencesEast ProvidenceUSA
  3. 3.Division of Engineering and Department of PhysicsBrown UniversityProvidenceUSA

Personalised recommendations