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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 10 — Oct. 1, 2012
  • pp: 2675–2684

Optical activity of metallic helices in the terahertz domain: a theoretical investigation

François Hache and Guilhem Gallot  »View Author Affiliations


JOSA B, Vol. 29, Issue 10, pp. 2675-2684 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002675


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Abstract

Optical activity in the terahertz spectral domain has recently seen a growing interest, but fine understanding of these phenomena is not yet developed. In this article, we study analytically the response of a metallic helix in the terahertz regime and present a full nonlocal calculation of its chiroptical response. Because we do not use multipolar expansion, this calculation is very general and applies to the case where the helix size is comparable to the wavelength of the light. We calculate the circular birefringence and dichroism in three configurations: propagation along or perpendicular to the helix axis and response of an isotropic distribution of such helices. We obtain analytical expressions and can examine the consequence of the breakdown of the multipolar expansion and the wavelength-dependence of the chiroptical response, as well as give orders of magnitude that compare favorably with experimental data. This calculation is also comforted by a finite element calculation.

© 2012 Optical Society of America

OCIS Codes
(260.2130) Physical optics : Ellipsometry and polarimetry
(260.3910) Physical optics : Metal optics
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: May 15, 2012
Revised Manuscript: July 10, 2012
Manuscript Accepted: July 11, 2012
Published: September 6, 2012

Citation
François Hache and Guilhem Gallot, "Optical activity of metallic helices in the terahertz domain: a theoretical investigation," J. Opt. Soc. Am. B 29, 2675-2684 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-10-2675


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References

  1. D. Mittleman, Sensing with Terahertz Radiation, Optical Sciences (Springer, 2003).
  2. K. J. Chau, M. C. Quong, and A. Y. Elezzabi, “Terahertz time-domain investigation of axial optical activity from a sub-wavelength helix,” Opt. Express 15, 3557–3567 (2007). [CrossRef]
  3. A. Y. Elezzabi and S. Sedergberg, “Optical activity in an artificial chiral media: a terahertz time-domain investigation of Karl F. Lindman’s 1920 pioneering experiment,” Opt. Express 17, 6600–6612 (2009). [CrossRef]
  4. K. J. Chau, “Investigation of the chiral origins of electromagnetic activity,” Opt. Lett. 35, 1187–1189 (2010). [CrossRef]
  5. L. Barron, Molecular Light Scattering and Optical Activity, 2nd ed. (Cambridge University, 2004).
  6. I. Tinoco, “Circular dichroism of large molecules,” Int. J. Quantum Chem. 16, 111–117 (1979). [CrossRef]
  7. L. D. Landau and E. M. Lifchitz, Electrodynamics of Continuous Media, 2nd ed. (Pergamon, 1984).
  8. D. M. Wood and N. W. Ashcroft, “Quantum size effects in the optical properties of small metallic particles,” Phys. Rev. B 25, 6255–6274 (1982). [CrossRef]
  9. D. Moore and I. Tinoco, “The circular dichroism of large helices. A free particle on a helix,” J. Chem. Phys. 72, 3396–3400 (1980). [CrossRef]
  10. M. G. Silveirinha, “Metamaterial homogenization approach with application to the characterization of microstructured composites with negative parameters,” Phys. Rev. B 75, 115104 (2007). [CrossRef]
  11. M. Born and E. Wolf, Principles of Optics, 6th ed. (Cambridge University, 1997).
  12. D. J. Griffiths, Introduction to Electrodynamics (Prentice Hall, 1999).
  13. Handbook of Chemistry and Physics, 76th ed. (CRC Press, 1996).
  14. F. Hache, D. Ricard, and C. Flytzanis, “Optical nonlinearities of small metal particles: surface-medited resonance and quantum-size effect,” J. Opt. Soc. Am. B 3, 1647–1655 (1986). [CrossRef]
  15. B. B. Dasgupta and R. Fuchs, “Polarizability of a small sphere including nonlocal effects,” Phys. Rev. B 24, 554–561 (1981). [CrossRef]
  16. E. U. Condon, “Theories of optical rotatory power,” Rev. Mod. Phys. 9, 432–457 (1937). [CrossRef]
  17. M. A. Ordal, R. J. Bell, R. W. Alexander, L. L. Long, and M. R. Querry, “Optical properties of fourteen metals in the infrared and far infrared: Al, Co, Cu, Au, Fe, Pb, Mo, Ni, Pd, Pt, Ag, Ti, V, and W,” Appl. Opt. 24, 4493–4499 (1985). [CrossRef]
  18. E. J. Zeman and G. C. Schatz, “An accurate electromagnetic study of surface enhancement factors for Ag, Au, Cu, Li, Na, Al, Ga, In, Zn, and Cdv,” J. Phys. Chem. 91, 634–643 (1987). [CrossRef]
  19. Note that the sign of Δnc is not made explicit in [4] but it can be inferred from its Fig. 2.
  20. Comsol multiphysics 3.4 (Comsol, Sweden).

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