Tunable subwavelength focusing with dispersion-engineered metamaterials in the terahertz regime

Jinho Lee, Kwangchil Lee, Haesung Park, Gumin Kang, Dai Hyuk Yu, Kyoungsik Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We develop a terahertz lens with both subwavelength resolution and tunable far-field focal length by extending the surface plasmon (SP) diffraction theory into spoof SPs of slit-groove-structure terahertz metamaterials. The dispersion properties of terahertz groove structures are engineered in the curved depth profile to produce a directional beaming feature and mimic SPs at the same time. The finite-difference time-domain simulation results confirm that the far-field focal position can be tuned by controlling the curvature of the relative electric field phase distribution profile on the output surface.

Original languageEnglish
Pages (from-to)2254-2256
Number of pages3
JournalOptics Letters
Volume35
Issue number13
DOIs
Publication statusPublished - 2010 Jul 1

Fingerprint

grooves
far fields
profiles
slits
lenses
curvature
electric fields
output
diffraction
simulation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Lee, Jinho ; Lee, Kwangchil ; Park, Haesung ; Kang, Gumin ; Yu, Dai Hyuk ; Kim, Kyoungsik. / Tunable subwavelength focusing with dispersion-engineered metamaterials in the terahertz regime. In: Optics Letters. 2010 ; Vol. 35, No. 13. pp. 2254-2256.
@article{741ababf286e4b0bb1395c0d2e838b62,
title = "Tunable subwavelength focusing with dispersion-engineered metamaterials in the terahertz regime",
abstract = "We develop a terahertz lens with both subwavelength resolution and tunable far-field focal length by extending the surface plasmon (SP) diffraction theory into spoof SPs of slit-groove-structure terahertz metamaterials. The dispersion properties of terahertz groove structures are engineered in the curved depth profile to produce a directional beaming feature and mimic SPs at the same time. The finite-difference time-domain simulation results confirm that the far-field focal position can be tuned by controlling the curvature of the relative electric field phase distribution profile on the output surface.",
author = "Jinho Lee and Kwangchil Lee and Haesung Park and Gumin Kang and Yu, {Dai Hyuk} and Kyoungsik Kim",
year = "2010",
month = "7",
day = "1",
doi = "10.1364/OL.35.002254",
language = "English",
volume = "35",
pages = "2254--2256",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "The Optical Society",
number = "13",

}

Tunable subwavelength focusing with dispersion-engineered metamaterials in the terahertz regime. / Lee, Jinho; Lee, Kwangchil; Park, Haesung; Kang, Gumin; Yu, Dai Hyuk; Kim, Kyoungsik.

In: Optics Letters, Vol. 35, No. 13, 01.07.2010, p. 2254-2256.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tunable subwavelength focusing with dispersion-engineered metamaterials in the terahertz regime

AU - Lee, Jinho

AU - Lee, Kwangchil

AU - Park, Haesung

AU - Kang, Gumin

AU - Yu, Dai Hyuk

AU - Kim, Kyoungsik

PY - 2010/7/1

Y1 - 2010/7/1

N2 - We develop a terahertz lens with both subwavelength resolution and tunable far-field focal length by extending the surface plasmon (SP) diffraction theory into spoof SPs of slit-groove-structure terahertz metamaterials. The dispersion properties of terahertz groove structures are engineered in the curved depth profile to produce a directional beaming feature and mimic SPs at the same time. The finite-difference time-domain simulation results confirm that the far-field focal position can be tuned by controlling the curvature of the relative electric field phase distribution profile on the output surface.

AB - We develop a terahertz lens with both subwavelength resolution and tunable far-field focal length by extending the surface plasmon (SP) diffraction theory into spoof SPs of slit-groove-structure terahertz metamaterials. The dispersion properties of terahertz groove structures are engineered in the curved depth profile to produce a directional beaming feature and mimic SPs at the same time. The finite-difference time-domain simulation results confirm that the far-field focal position can be tuned by controlling the curvature of the relative electric field phase distribution profile on the output surface.

UR - http://www.scopus.com/inward/record.url?scp=77955001327&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955001327&partnerID=8YFLogxK

U2 - 10.1364/OL.35.002254

DO - 10.1364/OL.35.002254

M3 - Article

C2 - 20596211

AN - SCOPUS:77955001327

VL - 35

SP - 2254

EP - 2256

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 13

ER -