Terahertz plasmonic Bessel beamformer

Yasuaki Monnai, David Jahn, Withawat Withayachumnankul, Martin Koch, Hiroyuki Shinoda

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We experimentally demonstrate terahertz Bessel beamforming based on the concept of plasmonics. The proposed planar structure is made of concentric metallic grooves with a subwavelength spacing that couple to a point source to create tightly confined surface waves or spoof surface plasmon polaritons. Concentric scatterers periodically incorporated at a wavelength scale allow for launching the surface waves into free space to define a Bessel beam. The Bessel beam defined at 0.29 THz has been characterized through terahertz time-domain spectroscopy. This approach is capable of generating Bessel beams with planar structures as opposed to bulky axicon lenses and can be readily integrated with solid-state terahertz sources.

Original languageEnglish
Article number021101
JournalApplied Physics Letters
Volume106
Issue number2
DOIs
Publication statusPublished - 2015 Jan 12
Externally publishedYes

Fingerprint

planar structures
surface waves
launching
beamforming
grooves
polaritons
point sources
lenses
spacing
solid state
scattering
wavelengths
spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Monnai, Y., Jahn, D., Withayachumnankul, W., Koch, M., & Shinoda, H. (2015). Terahertz plasmonic Bessel beamformer. Applied Physics Letters, 106(2), [021101]. https://doi.org/10.1063/1.4905445

Terahertz plasmonic Bessel beamformer. / Monnai, Yasuaki; Jahn, David; Withayachumnankul, Withawat; Koch, Martin; Shinoda, Hiroyuki.

In: Applied Physics Letters, Vol. 106, No. 2, 021101, 12.01.2015.

Research output: Contribution to journalArticle

Monnai, Y, Jahn, D, Withayachumnankul, W, Koch, M & Shinoda, H 2015, 'Terahertz plasmonic Bessel beamformer', Applied Physics Letters, vol. 106, no. 2, 021101. https://doi.org/10.1063/1.4905445
Monnai Y, Jahn D, Withayachumnankul W, Koch M, Shinoda H. Terahertz plasmonic Bessel beamformer. Applied Physics Letters. 2015 Jan 12;106(2). 021101. https://doi.org/10.1063/1.4905445
Monnai, Yasuaki ; Jahn, David ; Withayachumnankul, Withawat ; Koch, Martin ; Shinoda, Hiroyuki. / Terahertz plasmonic Bessel beamformer. In: Applied Physics Letters. 2015 ; Vol. 106, No. 2.
@article{3ee229df24f44c2ebf23d37e0b32cbdf,
title = "Terahertz plasmonic Bessel beamformer",
abstract = "We experimentally demonstrate terahertz Bessel beamforming based on the concept of plasmonics. The proposed planar structure is made of concentric metallic grooves with a subwavelength spacing that couple to a point source to create tightly confined surface waves or spoof surface plasmon polaritons. Concentric scatterers periodically incorporated at a wavelength scale allow for launching the surface waves into free space to define a Bessel beam. The Bessel beam defined at 0.29 THz has been characterized through terahertz time-domain spectroscopy. This approach is capable of generating Bessel beams with planar structures as opposed to bulky axicon lenses and can be readily integrated with solid-state terahertz sources.",
author = "Yasuaki Monnai and David Jahn and Withawat Withayachumnankul and Martin Koch and Hiroyuki Shinoda",
year = "2015",
month = "1",
day = "12",
doi = "10.1063/1.4905445",
language = "English",
volume = "106",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Terahertz plasmonic Bessel beamformer

AU - Monnai, Yasuaki

AU - Jahn, David

AU - Withayachumnankul, Withawat

AU - Koch, Martin

AU - Shinoda, Hiroyuki

PY - 2015/1/12

Y1 - 2015/1/12

N2 - We experimentally demonstrate terahertz Bessel beamforming based on the concept of plasmonics. The proposed planar structure is made of concentric metallic grooves with a subwavelength spacing that couple to a point source to create tightly confined surface waves or spoof surface plasmon polaritons. Concentric scatterers periodically incorporated at a wavelength scale allow for launching the surface waves into free space to define a Bessel beam. The Bessel beam defined at 0.29 THz has been characterized through terahertz time-domain spectroscopy. This approach is capable of generating Bessel beams with planar structures as opposed to bulky axicon lenses and can be readily integrated with solid-state terahertz sources.

AB - We experimentally demonstrate terahertz Bessel beamforming based on the concept of plasmonics. The proposed planar structure is made of concentric metallic grooves with a subwavelength spacing that couple to a point source to create tightly confined surface waves or spoof surface plasmon polaritons. Concentric scatterers periodically incorporated at a wavelength scale allow for launching the surface waves into free space to define a Bessel beam. The Bessel beam defined at 0.29 THz has been characterized through terahertz time-domain spectroscopy. This approach is capable of generating Bessel beams with planar structures as opposed to bulky axicon lenses and can be readily integrated with solid-state terahertz sources.

UR - http://www.scopus.com/inward/record.url?scp=84923775117&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923775117&partnerID=8YFLogxK

U2 - 10.1063/1.4905445

DO - 10.1063/1.4905445

M3 - Article

AN - SCOPUS:84923775117

VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 2

M1 - 021101

ER -