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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 2657–2666

Negative refraction and backward wave in pseudochiral mediums: illustrations of Gaussian beams

Ruey-Lin Chern and Po-Han Chang  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 2657-2666 (2013)

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We investigate the phenomena of negative refraction and backward wave in pseudochiral mediums, with illustrations of Gaussian beams. Due to symmetry breaking intrinsic in pseudochiral mediums, there exist two elliptically polarized eigenwaves with different wave vectors. As the chirality parameter increases from zero, the two waves begin to split from each other. For a wave incident from vacuum onto a pseudochiral medium, negative refraction may occur for the right-handed wave, whereas backward wave may appear for the left-handed wave. These features are illustrated with Gaussian beams based on Fourier integral formulations for the incident, reflected, and transmitted waves. Negative refraction and backward wave are manifest, respectively, on the energy flow in space and wavefront movement in time.

© 2013 OSA

OCIS Codes
(120.5710) Instrumentation, measurement, and metrology : Refraction
(230.1360) Optical devices : Beam splitters
(160.1585) Materials : Chiral media

ToC Category:
Physical Optics

Original Manuscript: November 29, 2012
Revised Manuscript: January 9, 2013
Manuscript Accepted: January 9, 2013
Published: January 28, 2013

Ruey-Lin Chern and Po-Han Chang, "Negative refraction and backward wave in pseudochiral mediums: illustrations of Gaussian beams," Opt. Express 21, 2657-2666 (2013)

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