Asymmetric coupling and dispersion of surface-plasmon-polariton waves on a periodically patterned anisotropic metal film

Jhuma Dutta, S. Anantha Ramakrishna, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The morphology of a columnar thin film (CTF) of silver renders it an effectively biaxially anisotropic continuum. CTFs of silver deposited on one-dimensional gratings of photoresist showed strong blazing action and asymmetrically coupled optical radiation to surface-plasmon-polariton (SPP) waves propagating only along one direction supported by either the CTF/photoresist or the CTF/air interfaces. Homogenization of the CTFs using the Bruggeman formalism revealed them to display hyperbolic dispersion, and the dispersion of SPP waves was adequately described thereby.

Original languageEnglish (US)
Article number013102
JournalJournal of Applied Physics
Volume117
Issue number1
DOIs
StatePublished - Jan 7 2015

Fingerprint

metal films
polaritons
photoresists
thin films
silver
homogenizing
gratings
formalism
continuums
air
radiation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "The morphology of a columnar thin film (CTF) of silver renders it an effectively biaxially anisotropic continuum. CTFs of silver deposited on one-dimensional gratings of photoresist showed strong blazing action and asymmetrically coupled optical radiation to surface-plasmon-polariton (SPP) waves propagating only along one direction supported by either the CTF/photoresist or the CTF/air interfaces. Homogenization of the CTFs using the Bruggeman formalism revealed them to display hyperbolic dispersion, and the dispersion of SPP waves was adequately described thereby.",
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Asymmetric coupling and dispersion of surface-plasmon-polariton waves on a periodically patterned anisotropic metal film. / Dutta, Jhuma; Ramakrishna, S. Anantha; Lakhtakia, Akhlesh.

In: Journal of Applied Physics, Vol. 117, No. 1, 013102, 07.01.2015.

Research output: Contribution to journalArticle

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AB - The morphology of a columnar thin film (CTF) of silver renders it an effectively biaxially anisotropic continuum. CTFs of silver deposited on one-dimensional gratings of photoresist showed strong blazing action and asymmetrically coupled optical radiation to surface-plasmon-polariton (SPP) waves propagating only along one direction supported by either the CTF/photoresist or the CTF/air interfaces. Homogenization of the CTFs using the Bruggeman formalism revealed them to display hyperbolic dispersion, and the dispersion of SPP waves was adequately described thereby.

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