Left/right asymmetry of the dipole field due to reflection from a periodic multilayer of a topological insulator and a columnar thin film

Antonio Scaglione; Francesco Chiadini; Vincenzo Fiumara; Akhlesh Lakhtakia

doi:10.1364/OE.391105

Left/right asymmetry of the dipole field due to reflection from a periodic multilayer of a topological insulator and a columnar thin film

Antonio Scaglione, Francesco Chiadini, Vincenzo Fiumara, Akhlesh Lakhtakia

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1 Scopus citations

Abstract

The problem of a vertical electric dipole radiating above a periodic multilayer whose unit cell comprises a layer of a topological insulator (TI) and a columnar thin film (CTF) was solved in order to investigate the left/right asymmetry of the total electric field in the far zone in the half-space containing the dipole. Occurring in a wide range of the polar observation angle, the left/right asymmetry of E_φ is due to both the CTFs and the TI layers. Occurring in a narrow range of the polar observation angle, the left/right asymmetry of E_θ is entirely due to the TI layers. For presently available values of the magnitude of the surface admittance γ_TI of TIs, significant left/right asymmetry occurs if the number of unit cells in the periodic TI/CTF multilayer is high enough.

Original language	English (US)
Pages (from-to)	22266-22275
Number of pages	10
Journal	Optics Express
Volume	28
Issue number	15
DOIs	https://doi.org/10.1364/OE.391105
State	Published - Jul 20 2020

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OE.391105

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title = "Left/right asymmetry of the dipole field due to reflection from a periodic multilayer of a topological insulator and a columnar thin film",

abstract = "The problem of a vertical electric dipole radiating above a periodic multilayer whose unit cell comprises a layer of a topological insulator (TI) and a columnar thin film (CTF) was solved in order to investigate the left/right asymmetry of the total electric field in the far zone in the half-space containing the dipole. Occurring in a wide range of the polar observation angle, the left/right asymmetry of Eφ is due to both the CTFs and the TI layers. Occurring in a narrow range of the polar observation angle, the left/right asymmetry of Eθ is entirely due to the TI layers. For presently available values of the magnitude of the surface admittance γTI of TIs, significant left/right asymmetry occurs if the number of unit cells in the periodic TI/CTF multilayer is high enough.",

author = "Antonio Scaglione and Francesco Chiadini and Vincenzo Fiumara and Akhlesh Lakhtakia",

note = "Funding Information: Ministero dell{\textquoteright}Istruzione, dell{\textquoteright}Universit{\`a} e della Ricerca (ARS01_00945 PON 2014-2020 LEONARDO 4.0). Funding Information: A. L. thanks the Charles Godfrey Binder Endowment at Penn State for ongoing support of his research. Publication of this work was funded by the Italian Ministry of Education, University and Scientific Research [ARS01_00945 PON 2014-2020 LEONARDO 4.0] Publisher Copyright: {\textcopyright} 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",

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doi = "10.1364/OE.391105",

language = "English (US)",

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T1 - Left/right asymmetry of the dipole field due to reflection from a periodic multilayer of a topological insulator and a columnar thin film

AU - Scaglione, Antonio

AU - Chiadini, Francesco

AU - Fiumara, Vincenzo

AU - Lakhtakia, Akhlesh

N1 - Funding Information: Ministero dell’Istruzione, dell’Università e della Ricerca (ARS01_00945 PON 2014-2020 LEONARDO 4.0). Funding Information: A. L. thanks the Charles Godfrey Binder Endowment at Penn State for ongoing support of his research. Publication of this work was funded by the Italian Ministry of Education, University and Scientific Research [ARS01_00945 PON 2014-2020 LEONARDO 4.0] Publisher Copyright: © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

PY - 2020/7/20

Y1 - 2020/7/20

N2 - The problem of a vertical electric dipole radiating above a periodic multilayer whose unit cell comprises a layer of a topological insulator (TI) and a columnar thin film (CTF) was solved in order to investigate the left/right asymmetry of the total electric field in the far zone in the half-space containing the dipole. Occurring in a wide range of the polar observation angle, the left/right asymmetry of Eφ is due to both the CTFs and the TI layers. Occurring in a narrow range of the polar observation angle, the left/right asymmetry of Eθ is entirely due to the TI layers. For presently available values of the magnitude of the surface admittance γTI of TIs, significant left/right asymmetry occurs if the number of unit cells in the periodic TI/CTF multilayer is high enough.

AB - The problem of a vertical electric dipole radiating above a periodic multilayer whose unit cell comprises a layer of a topological insulator (TI) and a columnar thin film (CTF) was solved in order to investigate the left/right asymmetry of the total electric field in the far zone in the half-space containing the dipole. Occurring in a wide range of the polar observation angle, the left/right asymmetry of Eφ is due to both the CTFs and the TI layers. Occurring in a narrow range of the polar observation angle, the left/right asymmetry of Eθ is entirely due to the TI layers. For presently available values of the magnitude of the surface admittance γTI of TIs, significant left/right asymmetry occurs if the number of unit cells in the periodic TI/CTF multilayer is high enough.

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Left/right asymmetry of the dipole field due to reflection from a periodic multilayer of a topological insulator and a columnar thin film

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