Thermally sensitive scattering of terahertz waves by coated cylinders for tunable invisibility and masking

Andriy E. Serebryannikov, Kamil B. Alici, Ekmel Ozbay, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Temperature-sensitive scattering of terahertz (THz) waves by infinitely long, cylindrical core-shell structures was theoretically studied. Each structure is a dielectric cylinder coated with an InSb shell illuminated by either a transverse-electric (TE) or a transverse-magnetic (TM) plane wave. InSb is a thermally tunable semiconductor showing a transition from dielectric to plasmonic state at THz frequencies. Accordingly, the total scattering efficiency (TSE) can be thermally tuned for both polarization states of the incident plane wave. The spectral locations of the maxima and minima of the TSE of an InSb-coated cylinder can be exploited for cloaking the core. At least three scenarios lead to the strong suppression of scattering by a single core-shell structure in different spectral regimes when the temperature is fixed. The excitation of localized surface-plasmon resonances is the feature being common for two of them, while the effect of volumetric resonance dominates in the third scenario. Regimes that are either highly or weakly sensitive to the core material were identified. Weak sensitivity enables masking, i.e., the core material cannot be identified by a far-zone observer. The TSE minima are usually significantly sensitive to the polarization state, but ones with weak sensitivity to the polarization state also exist.

Original languageEnglish (US)
Pages (from-to)1-14
Number of pages14
JournalOptics Express
Volume26
Issue number1
DOIs
StatePublished - Jan 8 2018

Fingerprint

masking
visibility
scattering
plane waves
polarization
sensitivity
surface plasmon resonance
retarding
temperature
excitation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Serebryannikov, Andriy E. ; Alici, Kamil B. ; Ozbay, Ekmel ; Lakhtakia, Akhlesh. / Thermally sensitive scattering of terahertz waves by coated cylinders for tunable invisibility and masking. In: Optics Express. 2018 ; Vol. 26, No. 1. pp. 1-14.
@article{183ef36ad24b44f78c9311d63dbebaa6,
title = "Thermally sensitive scattering of terahertz waves by coated cylinders for tunable invisibility and masking",
abstract = "Temperature-sensitive scattering of terahertz (THz) waves by infinitely long, cylindrical core-shell structures was theoretically studied. Each structure is a dielectric cylinder coated with an InSb shell illuminated by either a transverse-electric (TE) or a transverse-magnetic (TM) plane wave. InSb is a thermally tunable semiconductor showing a transition from dielectric to plasmonic state at THz frequencies. Accordingly, the total scattering efficiency (TSE) can be thermally tuned for both polarization states of the incident plane wave. The spectral locations of the maxima and minima of the TSE of an InSb-coated cylinder can be exploited for cloaking the core. At least three scenarios lead to the strong suppression of scattering by a single core-shell structure in different spectral regimes when the temperature is fixed. The excitation of localized surface-plasmon resonances is the feature being common for two of them, while the effect of volumetric resonance dominates in the third scenario. Regimes that are either highly or weakly sensitive to the core material were identified. Weak sensitivity enables masking, i.e., the core material cannot be identified by a far-zone observer. The TSE minima are usually significantly sensitive to the polarization state, but ones with weak sensitivity to the polarization state also exist.",
author = "Serebryannikov, {Andriy E.} and Alici, {Kamil B.} and Ekmel Ozbay and Akhlesh Lakhtakia",
year = "2018",
month = "1",
day = "8",
doi = "10.1364/OE.26.000001",
language = "English (US)",
volume = "26",
pages = "1--14",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "1",

}

Thermally sensitive scattering of terahertz waves by coated cylinders for tunable invisibility and masking. / Serebryannikov, Andriy E.; Alici, Kamil B.; Ozbay, Ekmel; Lakhtakia, Akhlesh.

In: Optics Express, Vol. 26, No. 1, 08.01.2018, p. 1-14.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermally sensitive scattering of terahertz waves by coated cylinders for tunable invisibility and masking

AU - Serebryannikov, Andriy E.

AU - Alici, Kamil B.

AU - Ozbay, Ekmel

AU - Lakhtakia, Akhlesh

PY - 2018/1/8

Y1 - 2018/1/8

N2 - Temperature-sensitive scattering of terahertz (THz) waves by infinitely long, cylindrical core-shell structures was theoretically studied. Each structure is a dielectric cylinder coated with an InSb shell illuminated by either a transverse-electric (TE) or a transverse-magnetic (TM) plane wave. InSb is a thermally tunable semiconductor showing a transition from dielectric to plasmonic state at THz frequencies. Accordingly, the total scattering efficiency (TSE) can be thermally tuned for both polarization states of the incident plane wave. The spectral locations of the maxima and minima of the TSE of an InSb-coated cylinder can be exploited for cloaking the core. At least three scenarios lead to the strong suppression of scattering by a single core-shell structure in different spectral regimes when the temperature is fixed. The excitation of localized surface-plasmon resonances is the feature being common for two of them, while the effect of volumetric resonance dominates in the third scenario. Regimes that are either highly or weakly sensitive to the core material were identified. Weak sensitivity enables masking, i.e., the core material cannot be identified by a far-zone observer. The TSE minima are usually significantly sensitive to the polarization state, but ones with weak sensitivity to the polarization state also exist.

AB - Temperature-sensitive scattering of terahertz (THz) waves by infinitely long, cylindrical core-shell structures was theoretically studied. Each structure is a dielectric cylinder coated with an InSb shell illuminated by either a transverse-electric (TE) or a transverse-magnetic (TM) plane wave. InSb is a thermally tunable semiconductor showing a transition from dielectric to plasmonic state at THz frequencies. Accordingly, the total scattering efficiency (TSE) can be thermally tuned for both polarization states of the incident plane wave. The spectral locations of the maxima and minima of the TSE of an InSb-coated cylinder can be exploited for cloaking the core. At least three scenarios lead to the strong suppression of scattering by a single core-shell structure in different spectral regimes when the temperature is fixed. The excitation of localized surface-plasmon resonances is the feature being common for two of them, while the effect of volumetric resonance dominates in the third scenario. Regimes that are either highly or weakly sensitive to the core material were identified. Weak sensitivity enables masking, i.e., the core material cannot be identified by a far-zone observer. The TSE minima are usually significantly sensitive to the polarization state, but ones with weak sensitivity to the polarization state also exist.

UR - http://www.scopus.com/inward/record.url?scp=85041457382&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85041457382&partnerID=8YFLogxK

U2 - 10.1364/OE.26.000001

DO - 10.1364/OE.26.000001

M3 - Article

C2 - 29328281

AN - SCOPUS:85041457382

VL - 26

SP - 1

EP - 14

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 1

ER -