Synoptic view of Dyakonov–Tamm waves localized to the planar interface of two chiral sculptured thin films

Gao, Jun; Lakhtakia, Akhlesh; Lei, Mingkai

doi:doi:10.1117/1.3543814

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Journal of Nanophotonics / Volume 5 / Special Section on Nanostructured Thin Films: Fabrication, Characterization, and Application

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Synoptic view of Dyakonov–Tamm waves localized to the planar interface of two chiral sculptured thin films

J. Nanophoton. 5, 051502 (Feb 02, 2011); http://dx.doi.org/10.1117/1.3543814

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Abstract

References (41)

Jun Gao and Akhlesh Lakhtakia

Pennsylvania State University, Department of Engineering Science and Mechanics, Nanoengineered Metamaterials Group (NanoMM), University Park, Pennsylvania 16802-6812

Mingkai Lei

Dalian University of Technology, School of Materials Science and Engineering, Surface Engineering Laboratory, Dalian 116024, China

The Dyakonov–Tamm wave combines the features of the Dyakonov wave and the Tamm electronic state. Dyakonov–Tamm waves guided by the planar interface of two dissimilar chiral sculptured thin films (STFs) were systematically examined. The interfaces result from the chiral STFs being dissimilar in (a) orientation about the helical axis, (b) structural handedness, (c) structural period, (d) vapor incidence angle, (e) material, or (f) various combinations thereof. A boundary-value problem for the propagation of Dyakonov–Tamm waves was formulated and numerically solved. Up to three physical solutions were obtained for any specific combination of constitutive properties of the two chiral STFs. Each solution indicates the existence of a Dyakonov–Tamm wave. If more than one solution exists, the corresponding Dyakonov–Tamm waves differ in phase speed and degree of localization to the interface. Fewer solutions were found when the two chiral STFs differ in many attributes.

History

Received Aug 12, 2010
Accepted Oct 07, 2010
Revised Oct 03, 2010
Published online Feb 02, 2011
Corrected Mar 03, 2011

Digital Object Identifier

http://dx.doi.org/10.1117/1.3543814

Citation

Jun Gao, Akhlesh Lakhtakia and Mingkai Lei, "Synoptic view of Dyakonov–Tamm waves localized to the planar interface of two chiral sculptured thin films", J. Nanophoton. 5, 051502 (Feb 02, 2011); http://dx.doi.org/10.1117/1.3543814