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Journal of Nanophotonics

Multiple trains of same-color surface-plasmon-polaritons guided by the planar interface of a metal and a sculptured nematic thin film. Part VI: Spin and orbital angular momentums
Author(s): Xuerong Xiao; Muhammad Faryad; Akhlesh Lakhtakia
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Paper Abstract

The spin and the orbital parts of the angular momentum of multiple surface-plasmon-polariton (SPP) waves guided by the planar interface of a metal and a periodically nonhomogeneous sculptured nematic thin film (SNTF) were theoretically investigated. Both the Minkowski and Abraham formulations of angular momentum were considered. Multiple SPP waves guided by the metal/SNTF interface propagating along a direction that does not lie wholly in the morphologically significant plane of the SNTF were found to have different magnitudes and directions of the spin and the orbital parts of the angular momentum. The spin angular momentum is oriented in a variety of directions, but the orbital angular momentum is perpendicular to the direction of propagation and lies in the interface plane. Not only does the periodic nonhomogeneity of the partnering dielectric material engender a multiplicity of SPP waves, but also it can enhance the magnitudes of the spin and orbital parts of their angular momentums.

Paper Details

Date Published: 4 October 2013
PDF: 17 pages
J. Nanophoton. 7(1) 073081 doi: 10.1117/1.JNP.7.073081
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Xuerong Xiao, The Pennsylvania State Univ. (United States)
Muhammad Faryad, The Pennsylvania State Univ. (United States)
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)


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