TY - JOUR
T1 - Excitation of guided waves on a lossless dielectric slab by an E-polarized complex source point beam
AU - Tsitsas, Nikolaos L.
AU - Valagiannopoulos, Costas
AU - Nosich, Alexander I.
N1 - Funding Information:
Manuscript received April 12, 2018; revised February 19, 2019; accepted April 15, 2019. Date of publication May 3, 2019; date of current version August 12, 2019. The work of C. Valagiannopoulos was supported by the Ministry of Education and Science of the Republic of Kazakhstan State-Targeted Program under Grant BR05236454, and in part by Nazarbayev University Faculty Development Competitive Research Grant through the Project “Super Transmitters, Radiators and Lenses via Photonic Synthetic Matter” under Grant 090118FD5349 and in part by Nazarbayev University ORAU Grant through the Project “Structured Light for Nonlinear and Topological Photonics” under Grant 20162031. (Corresponding author: Nikolaos L. Tsitsas.) N. L. Tsitsas is with the School of Informatics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece (e-mail: ntsitsas@csd.auth.gr).
PY - 2019/8
Y1 - 2019/8
N2 - A lossless slab excited by an E-polarized two-dimensional (2-D) complex source point (CSP) beam is studied analytically. Such a source, unlike a Gaussian beam, satisfies exactly the Helmholtz equation and radiation condition, without paraxial approximation or formulation incompleteness. The guided-waves fields as well as the scattered fields in the regions above and below the slab are determined; in turn, the corresponding powers are directly calculated. Numerical results on the variations of these quantities with respect to the slab electrical thickness, the beam angle of incidence, the source aperture size and location are presented. Substantial power transfer from the finite directive source into each of the slab's guided waves is recorded especially in the case of near-grazing beam illumination. Such a finding may inspire further theoretical and experimental efforts towards numerous research directions like non-invasive sensing, wireless optical tagging and energy teleportation.
AB - A lossless slab excited by an E-polarized two-dimensional (2-D) complex source point (CSP) beam is studied analytically. Such a source, unlike a Gaussian beam, satisfies exactly the Helmholtz equation and radiation condition, without paraxial approximation or formulation incompleteness. The guided-waves fields as well as the scattered fields in the regions above and below the slab are determined; in turn, the corresponding powers are directly calculated. Numerical results on the variations of these quantities with respect to the slab electrical thickness, the beam angle of incidence, the source aperture size and location are presented. Substantial power transfer from the finite directive source into each of the slab's guided waves is recorded especially in the case of near-grazing beam illumination. Such a finding may inspire further theoretical and experimental efforts towards numerous research directions like non-invasive sensing, wireless optical tagging and energy teleportation.
KW - Complex beams
KW - guided waves
KW - scattering
KW - slabs
KW - waveguides
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U2 - 10.1109/TAP.2019.2913803
DO - 10.1109/TAP.2019.2913803
M3 - Article
AN - SCOPUS:85070590903
VL - 67
SP - 5532
EP - 5543
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 8
M1 - 8705661
ER -