TY - JOUR
T1 - Surface-plasmon-polariton wave propagation supported by anisotropic materials
T2 - Multiple modes and mixed exponential and linear localization characteristics
AU - Zhou, Chenzhang
AU - Mackay, Tom G.
AU - Lakhtakia, Akhlesh
N1 - Funding Information:
This work was supported by EPSRC (Grant No. EP/S00033X/1) and U.S. NSF (Grant No. DMS-1619901). A.L. thanks the Charles Godfrey Binder Endowment at the Pennsylvania State University for ongoing support of his research.
Funding Information:
This work was supported by EPSRC (Grant No. EP/S00033X/1) and U.S. NSF (Grant No. DMS-1619901). A.L. thanks the Charles Godfrey Binder Endowment at the Pennsylvania State University for ongoing support of his research.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/9/9
Y1 - 2019/9/9
N2 - The canonical boundary-value problem for surface-plasmon-polariton (SPP) waves guided by the planar interface of a dielectric material and a plasmonic material was solved for cases wherein either partnering material could be a uniaxial material with optic axis lying in the interface plane. Numerical studies revealed that two different SPP waves, with different phase speeds, propagation lengths, and penetration depths, can propagate in a given direction in the interface plane; in contrast, the planar interface of isotropic partnering materials supports only one SPP wave for each propagation direction. Also, for a unique propagation direction in each quadrant of the interface plane, it was demonstrated that an unconventional type of SPP wave - called a surface-plasmon-polariton-Voigt (SPP-V) wave - can exist. The fields of these SPP-V waves decay as the product of a linear and an exponential function of the distance from the interface in the anisotropic partnering material; in contrast, the fields of conventional SPP waves decay only exponentially with distance from the interface. Explicit analytic solutions of the dispersion relation for SPP-V waves exist and help establish constraints on the constitutive-parameter regimes for the partnering materials that support SPP-V-wave propagation.
AB - The canonical boundary-value problem for surface-plasmon-polariton (SPP) waves guided by the planar interface of a dielectric material and a plasmonic material was solved for cases wherein either partnering material could be a uniaxial material with optic axis lying in the interface plane. Numerical studies revealed that two different SPP waves, with different phase speeds, propagation lengths, and penetration depths, can propagate in a given direction in the interface plane; in contrast, the planar interface of isotropic partnering materials supports only one SPP wave for each propagation direction. Also, for a unique propagation direction in each quadrant of the interface plane, it was demonstrated that an unconventional type of SPP wave - called a surface-plasmon-polariton-Voigt (SPP-V) wave - can exist. The fields of these SPP-V waves decay as the product of a linear and an exponential function of the distance from the interface in the anisotropic partnering material; in contrast, the fields of conventional SPP waves decay only exponentially with distance from the interface. Explicit analytic solutions of the dispersion relation for SPP-V waves exist and help establish constraints on the constitutive-parameter regimes for the partnering materials that support SPP-V-wave propagation.
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U2 - 10.1103/PhysRevA.100.033809
DO - 10.1103/PhysRevA.100.033809
M3 - Article
AN - SCOPUS:85072631169
SN - 2469-9926
VL - 100
JO - Physical Review A
JF - Physical Review A
IS - 3
M1 - 033809
ER -