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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 8 — Apr. 15, 2010
  • pp: 1187–1189

Investigation of the chiral origins of electromagnetic activity

Kenneth J. Chau  »View Author Affiliations


Optics Letters, Vol. 35, Issue 8, pp. 1187-1189 (2010)
http://dx.doi.org/10.1364/OL.35.001187


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Abstract

Electromagnetic activity of a single, subwavelength helix is explored under transverse illumination with terahertz electromagnetic pulses. By measuring the phase accrual difference between right- and left-circularly polarized components of the pulse transmitted through a series of identically shaped helices, where sections of each helix have been systematically removed, a linear relationship is discovered between the electromagnetic activity of a helix and its thickness in the propagation direction of the electromagnetic wave. A single helix is thus shown to possess intrinsic electromagnetic activity, describable by an effective circular birefringence.

© 2010 Optical Society of America

OCIS Codes
(260.5430) Physical optics : Polarization
(160.1585) Materials : Chiral media

ToC Category:
Materials

History
Original Manuscript: January 4, 2010
Revised Manuscript: March 2, 2010
Manuscript Accepted: March 3, 2010
Published: April 13, 2010

Citation
Kenneth�J. Chau, "Investigation of the chiral origins of electromagnetic activity," Opt. Lett. 35, 1187-1189 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-8-1187

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