Uniform near-field nanopatterning due to the field distribution control by oblique femtosecond laser irradiation to silicon and gold nanoparticles

Tomoya Miyanishi, Mitsuhiro Terakawa, Minoru Obara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present near-field optical properties around silicon and gold nanoparticles aligned on a silicon substrate excited by oblique incidence femtosecond laser for nanohole processing. Near-field nanofabrication will open up smart applications for new optical devices with high-throughput processing. The near field around silicon and gold particles is explained by Mie scattering theory, while the near field around gold nanoparticles is explained by plasmon polaritons inside nanoparticles. With gold nanoparticles, theoretical study revealed that the incident laser energy is concentrated into the contact point between the particle and the substrate due to the image charge inside the substrate at any incident angles. With particles with a dielectric constant as high as silicon, the polarized charge shows a similar effect to the plasmon charge. Therefore the distribution of the concentrated energy provided with silicon nanoparticles is similar to that of gold nanoparticle.

Original languageEnglish
Title of host publicationProceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011
Pages197-201
Number of pages5
DOIs
Publication statusPublished - 2011
Event2011 1st International Symposium on Access Spaces, ISAS 2011 - Yokohama, Japan
Duration: 2011 Jun 172011 Jun 19

Publication series

NameProceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011

Other

Other2011 1st International Symposium on Access Spaces, ISAS 2011
Country/TerritoryJapan
CityYokohama
Period11/6/1711/6/19

Keywords

  • femtosecond laser ablation
  • nanoparticles
  • near-field nanofabrication
  • plasmonics

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Uniform near-field nanopatterning due to the field distribution control by oblique femtosecond laser irradiation to silicon and gold nanoparticles'. Together they form a unique fingerprint.

Cite this