Surface-plasmon coupling in subwavelength periodic structures

K. Y. Choi, J. Yoon, S. H. Song, C. H. Oh, P. S. Kim

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Strong reemission of the surface plasmons through a single subwavelength aperture is mainly caused by in-phase coupling of the surface localized electromagnetic waves to irradiative modes by periodic groove structures. By introducing a linear chirping in the groove period, we enhance the coupling effect for focusing the reemitted light in near-field region. The linear chirping in the groove structures which have monotonically decreasing period, leads to focusing the reemitted light with the length, depth, and width of the focus in order of wavelength. We show numerically that the focusing ability is dramatically affected by amount of the linear chirping, and that efficient relaying of a diverging Gaussian beam to a photonic crystal waveguide can be achieved.

Original languageEnglish
Article number04
Pages (from-to)22-26
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5636
Issue numberPART 1
DOIs
StatePublished - 2005 Jun 14
EventHolography, Diffractive Optics, and Applications II - Beijing, China
Duration: 2004 Nov 82004 Nov 11

Fingerprint

Surface Plasmon
Periodic structures
Periodic Structures
grooves
Plasmons
Gaussian beams
Photonic crystals
Electromagnetic waves
Surface waves
electromagnetic surface waves
Surface Plasmons
Waveguides
Gaussian Beam
Near-field
Photonic Crystal
Electromagnetic Wave
plasmons
Wavelength
Waveguide
near fields

Keywords

  • Subwavelength optics
  • Surface plasmon

Cite this

@article{f628be6366e44813b4da11837103fbd8,
title = "Surface-plasmon coupling in subwavelength periodic structures",
abstract = "Strong reemission of the surface plasmons through a single subwavelength aperture is mainly caused by in-phase coupling of the surface localized electromagnetic waves to irradiative modes by periodic groove structures. By introducing a linear chirping in the groove period, we enhance the coupling effect for focusing the reemitted light in near-field region. The linear chirping in the groove structures which have monotonically decreasing period, leads to focusing the reemitted light with the length, depth, and width of the focus in order of wavelength. We show numerically that the focusing ability is dramatically affected by amount of the linear chirping, and that efficient relaying of a diverging Gaussian beam to a photonic crystal waveguide can be achieved.",
keywords = "Subwavelength optics, Surface plasmon",
author = "Choi, {K. Y.} and J. Yoon and Song, {S. H.} and Oh, {C. H.} and Kim, {P. S.}",
year = "2005",
month = "6",
day = "14",
doi = "10.1117/12.576207",
language = "English",
volume = "5636",
pages = "22--26",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
number = "PART 1",

}

Surface-plasmon coupling in subwavelength periodic structures. / Choi, K. Y.; Yoon, J.; Song, S. H.; Oh, C. H.; Kim, P. S.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5636, No. PART 1, 04, 14.06.2005, p. 22-26.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Surface-plasmon coupling in subwavelength periodic structures

AU - Choi, K. Y.

AU - Yoon, J.

AU - Song, S. H.

AU - Oh, C. H.

AU - Kim, P. S.

PY - 2005/6/14

Y1 - 2005/6/14

N2 - Strong reemission of the surface plasmons through a single subwavelength aperture is mainly caused by in-phase coupling of the surface localized electromagnetic waves to irradiative modes by periodic groove structures. By introducing a linear chirping in the groove period, we enhance the coupling effect for focusing the reemitted light in near-field region. The linear chirping in the groove structures which have monotonically decreasing period, leads to focusing the reemitted light with the length, depth, and width of the focus in order of wavelength. We show numerically that the focusing ability is dramatically affected by amount of the linear chirping, and that efficient relaying of a diverging Gaussian beam to a photonic crystal waveguide can be achieved.

AB - Strong reemission of the surface plasmons through a single subwavelength aperture is mainly caused by in-phase coupling of the surface localized electromagnetic waves to irradiative modes by periodic groove structures. By introducing a linear chirping in the groove period, we enhance the coupling effect for focusing the reemitted light in near-field region. The linear chirping in the groove structures which have monotonically decreasing period, leads to focusing the reemitted light with the length, depth, and width of the focus in order of wavelength. We show numerically that the focusing ability is dramatically affected by amount of the linear chirping, and that efficient relaying of a diverging Gaussian beam to a photonic crystal waveguide can be achieved.

KW - Subwavelength optics

KW - Surface plasmon

UR - http://www.scopus.com/inward/record.url?scp=19844379279&partnerID=8YFLogxK

U2 - 10.1117/12.576207

DO - 10.1117/12.576207

M3 - Conference article

AN - SCOPUS:19844379279

VL - 5636

SP - 22

EP - 26

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

IS - PART 1

M1 - 04

ER -