Spectral shifts in the properties of a periodic multilayered stack due to isotropic chiral layers

S. Anantha Ramakrishna, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Investigating the canonical problem of a periodic multilayered stack containing isotropic chiral layers, we homogenized it as a uniaxial bi-anisotropic medium and derived its effective constitutive parameters. The stack shows a resonant behaviour, when its unit cell consists of a metallic layer and an isotropic chiral layer. The presence of isotropic chirality can result in small shifts of the resonance frequency for reasonably large values of the chirality parameter, implying that the sign of an effective permittivity can be switched. Such spectral shifts in the dielectric properties can be potentially useful for spectroscopic purposes.

Original languageEnglish (US)
Article number074001
JournalJournal of Optics A: Pure and Applied Optics
Volume11
Issue number7
DOIs
StatePublished - Nov 18 2009

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Chirality
chirality
Anisotropic media
shift
Dielectric properties
Permittivity
anisotropic media
dielectric properties
permittivity
cells

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

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Spectral shifts in the properties of a periodic multilayered stack due to isotropic chiral layers. / Ramakrishna, S. Anantha; Lakhtakia, Akhlesh.

In: Journal of Optics A: Pure and Applied Optics, Vol. 11, No. 7, 074001, 18.11.2009.

Research output: Contribution to journalArticle

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AB - Investigating the canonical problem of a periodic multilayered stack containing isotropic chiral layers, we homogenized it as a uniaxial bi-anisotropic medium and derived its effective constitutive parameters. The stack shows a resonant behaviour, when its unit cell consists of a metallic layer and an isotropic chiral layer. The presence of isotropic chirality can result in small shifts of the resonance frequency for reasonably large values of the chirality parameter, implying that the sign of an effective permittivity can be switched. Such spectral shifts in the dielectric properties can be potentially useful for spectroscopic purposes.

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