Terahertz Dipole Nanoantenna Arrays: Resonance Characteristics

Luca Razzari; Andrea Toma; Matteo Clerici; Mostafa Shalaby; Gobind Das; Carlo Liberale; Manohar Chirumamilla; Remo Proietti Zaccaria; Francesco De Angelis; Marco Peccianti; Roberto Morandotti; Enzo Di Fabrizio

doi:10.1007/s11468-012-9439-0

Terahertz Dipole Nanoantenna Arrays: Resonance Characteristics

Luca Razzari^*, Andrea Toma, Matteo Clerici, Mostafa Shalaby, Gobind Das, Carlo Liberale, Manohar Chirumamilla, Remo Proietti Zaccaria, Francesco De Angelis, Marco Peccianti, Roberto Morandotti, Enzo Di Fabrizio

^*Corresponding author for this work

Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions, well below the diffraction limit. Here, we investigate the resonance properties of ordered arrays of terahertz dipole nanoantennas, both experimentally and through numerical simulations. We demonstrate the tunability of this type of structures, in a range (~1-2 THz) that is particularly interesting and accessible by means of standard zinc telluride sources. We additionally study the near-field resonance properties of the arrays, finding that the resonance shift observed between near-field and far-field spectra is predominantly ascribable to ohmic damping.

Original language	English (US)
Pages (from-to)	133-138
Number of pages	6
Journal	Plasmonics
Volume	8
Issue number	1
DOIs	https://doi.org/10.1007/s11468-012-9439-0
State	Published - Mar 2013

Bibliographical note

Funding Information:
Acknowledgments The authors gratefully acknowledge the support from European Projects SMD FP7 no. CP-FP 229375-2; Nanoantenna FP7 no. 241818; and FOCUS FP7 no. 270483.

Keywords

Nanophotonics
Nanostructure fabrication
Plasmonics
Terahertz spectroscopy

ASJC Scopus subject areas

Biotechnology
Biophysics
Biochemistry

Access to Document

10.1007/s11468-012-9439-0

Cite this

@article{2f3c9d3a035643f4ab93676f3b9dc225,

title = "Terahertz Dipole Nanoantenna Arrays: Resonance Characteristics",

abstract = "Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions, well below the diffraction limit. Here, we investigate the resonance properties of ordered arrays of terahertz dipole nanoantennas, both experimentally and through numerical simulations. We demonstrate the tunability of this type of structures, in a range (~1-2 THz) that is particularly interesting and accessible by means of standard zinc telluride sources. We additionally study the near-field resonance properties of the arrays, finding that the resonance shift observed between near-field and far-field spectra is predominantly ascribable to ohmic damping.",

keywords = "Nanophotonics, Nanostructure fabrication, Plasmonics, Terahertz spectroscopy",

author = "Luca Razzari and Andrea Toma and Matteo Clerici and Mostafa Shalaby and Gobind Das and Carlo Liberale and Manohar Chirumamilla and Zaccaria, {Remo Proietti} and {De Angelis}, Francesco and Marco Peccianti and Roberto Morandotti and {Di Fabrizio}, Enzo",

note = "Funding Information: Acknowledgments The authors gratefully acknowledge the support from European Projects SMD FP7 no. CP-FP 229375-2; Nanoantenna FP7 no. 241818; and FOCUS FP7 no. 270483.",

year = "2013",

month = mar,

doi = "10.1007/s11468-012-9439-0",

language = "English (US)",

volume = "8",

pages = "133--138",

journal = "Plasmonics",

issn = "1557-1955",

publisher = "Springer",

number = "1",

}

TY - JOUR

T1 - Terahertz Dipole Nanoantenna Arrays

T2 - Resonance Characteristics

AU - Razzari, Luca

AU - Toma, Andrea

AU - Clerici, Matteo

AU - Shalaby, Mostafa

AU - Das, Gobind

AU - Liberale, Carlo

AU - Chirumamilla, Manohar

AU - Zaccaria, Remo Proietti

AU - De Angelis, Francesco

AU - Peccianti, Marco

AU - Morandotti, Roberto

AU - Di Fabrizio, Enzo

N1 - Funding Information: Acknowledgments The authors gratefully acknowledge the support from European Projects SMD FP7 no. CP-FP 229375-2; Nanoantenna FP7 no. 241818; and FOCUS FP7 no. 270483.

PY - 2013/3

Y1 - 2013/3

N2 - Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions, well below the diffraction limit. Here, we investigate the resonance properties of ordered arrays of terahertz dipole nanoantennas, both experimentally and through numerical simulations. We demonstrate the tunability of this type of structures, in a range (~1-2 THz) that is particularly interesting and accessible by means of standard zinc telluride sources. We additionally study the near-field resonance properties of the arrays, finding that the resonance shift observed between near-field and far-field spectra is predominantly ascribable to ohmic damping.

AB - Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions, well below the diffraction limit. Here, we investigate the resonance properties of ordered arrays of terahertz dipole nanoantennas, both experimentally and through numerical simulations. We demonstrate the tunability of this type of structures, in a range (~1-2 THz) that is particularly interesting and accessible by means of standard zinc telluride sources. We additionally study the near-field resonance properties of the arrays, finding that the resonance shift observed between near-field and far-field spectra is predominantly ascribable to ohmic damping.

KW - Nanophotonics

KW - Nanostructure fabrication

KW - Plasmonics

KW - Terahertz spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84874977815&partnerID=8YFLogxK

U2 - 10.1007/s11468-012-9439-0

DO - 10.1007/s11468-012-9439-0

M3 - Article

C2 - 23504505

AN - SCOPUS:84874977815

SN - 1557-1955

VL - 8

SP - 133

EP - 138

JO - Plasmonics

JF - Plasmonics

IS - 1

ER -

Terahertz Dipole Nanoantenna Arrays: Resonance Characteristics

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this