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2010 Fiscal Year Final Research Report

Analysis of photon-localization within integrated functional structures using narrow-band laser microimaging spectroscopy

Planned Research

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Project AreaStrong Photons-Molecules Coupling Fields for Chemical Reactions
Project/Area Number 19049002
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionHokkaido University

Principal Investigator

SASAKI Keiji  北海道大学, 電子科学研究所, 教授 (00183822)

Co-Investigator(Kenkyū-buntansha) FUJIWARA Hideki  北海道大学, 電子科学研究所, 准教授 (10374670)
Project Period (FY) 2007 – 2010
Keywords微小共振器 / 顕微分光イメージング / 金属ナノ構造体 / 光局在 / 光反応増強
Research Abstract

In this research project, we were aiming to realize the ultimate strong photon-molecule coupling fields, in which one photon and one molecule are interacted with perfect (100%) efficiency. This coupling field is based on the combination of spatial photon-localization (optical antenna effect) in plasmonic nanostructures and temporal photon-confinement (group-velocity reduction effect) in optical micro-cavities. For this purpose, we have investigated (a) a technique for the efficient localized plasmon excitation using a fiber-coupled microspherrical cavity system and (b) a spatially resolved mapping of localized fields using a scattering-type near-field microscope. In the study of efficient plasmon field excitation using a microcavity system, we have succeeded to suggest the possibility that about 93% incident light could couple to a gold coated AFM tip via a tapered fiber coupled microspherical cavity system at the critical condition, which was achieved by changing the distances between a taper, a microsphere, and a gold-coated AFM tip. Furthermore, we constructed a scattering-type near-field optical microscope in order to directly measure localized plasmonic fields in metal nanostructures with high spatial resolution beyond the diffraction limit. By using a scattering-type near field microscope, we measured metal nanostructures with nanogap, which were fabricated by e-beam lithography / lift-off techniques. From the results, we confirmed that the intense scattering light was observed at the nanogap of the structure and the intensity distribution showed that the width of this intensity spot was 9.2±0.5 nm, which was ~1/100 of the incident laser wavelength. Because these experimental results were in good agreement with those of numerical predictions, we succeeded to directly visualize the localized fields induced in metal nanostructures.

  • Research Products

    (15 results)

All 2011 2010 2009 2008 2007 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (3 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Direct imaging of nanogap-mode Plasmon-resonant fields2011

    • Author(s)
      Y. Tanaka, H. Ishiguro, H. Fujiwara, Y. Yokota, K. Ueno, H. Misawa, and K. Sasaki
    • Journal Title

      Opt. Exp.

      Volume: 19(8) Pages: 7726-7733

    • Peer Reviewed
  • [Journal Article] Quantum lithography under imperfect conditions: effects of loss and dephasing on two-photon interference fringes2011

    • Author(s)
      H. Fujiwara, Y. Kawabe, R. Okamoto, Sh. Takeuchi, and K. Sasaki
    • Journal Title

      J.Opt.Soc.Am.B

      Volume: 28(3) Pages: 422-431

    • Peer Reviewed
  • [Journal Article] Fano-like resonance in an optically driven atomic force microscope cantilever2011

    • Author(s)
      S. Kadri, H. Fujiwara, and K. Sasaki
    • Journal Title

      Opt. Exp.

      Volume: 19(3) Pages: 2317-2324

    • Peer Reviewed
  • [Journal Article] Selection and transfer of individual plasmon-resonant metal nanoparticles2010

    • Author(s)
      Y. Tanaka and K. Sasaki
    • Journal Title

      Appl. Phys. Lett.

      Volume: 96(5) Pages: 053117/1-053117/3

    • Peer Reviewed
  • [Journal Article] Direct observation of localized fields in nanogaps between metal particles using a scattering-type near-field microscope2009

    • Author(s)
      H. Fujiwara, Y. Tanaka, H. Ishiguro, A. Saito and K. Sasaki
    • Journal Title

      Appl. Phys. Exp.

      Volume: 2(10) Pages: 102002/1-102002/3

    • Peer Reviewed
  • [Journal Article] Numerical analysis of resonant properties of a waveguide structure within a random medium2009

    • Author(s)
      H. Fujiwara, Y. Hamabata, and K. Sasaki
    • Journal Title

      Opt. Exp.

      Volume: 17(13) Pages: 10522-10528

    • Peer Reviewed
  • [Journal Article] Numerical analysis of resonant and lasing properties at a defect region within a random structure2009

    • Author(s)
      H. Fujiwara, Y. Hamabata, and K. Sasaki
    • Journal Title

      Opt. Exp.

      Volume: 17(5) Pages: 3970-3977

    • Peer Reviewed
  • [Journal Article] Control of spontaneous emission coupling factor βin fiber-coupled microsphere resonators2008

    • Author(s)
      H. Takashima, H. Fujiwara, S. Takeuchi, K. Sasaki, and M. Takahashi
    • Journal Title

      Appl. Phys. Lett.

      Volume: 92(7) Pages: 07115-1-07115-3

    • Peer Reviewed
  • [Journal Article] Quantum interference fringes beating the diffraction limit2007

    • Author(s)
      Yoshio Kawabe, H. Fujiwara, R. Okamoto, K. Sasaki, and S. Takeuchi
    • Journal Title

      Opt. Exp.

      Volume: 15(21) Pages: 14244-14250

    • Peer Reviewed
  • [Journal Article] Beating the Standard Quantum Limit with Four Entangled Photons2007

    • Author(s)
      T. Nagata, R. Okamoto, J. O’Brien, K. Sasaki and S. Takeuchi
    • Journal Title

      Science

      Volume: 316 Pages: 726-729

    • Peer Reviewed
  • [Presentation] Quantum photonic technology beating the classical limit2010

    • Author(s)
      K. Sasaki
    • Organizer
      Swinburne University of Technology
    • Place of Presentation
      Melbourne, Australia(Visiting Professor Seminar)
    • Year and Date
      2010-01-21
  • [Presentation] Photon technology beating the classical limit2009

    • Author(s)
      K. Sasaki
    • Organizer
      RIES-CIS Mini-workshop on Nano/Bio/Quantum Science
    • Place of Presentation
      National Chiao Tung University or Hsinchu Jiao Tong University, Taiwan
    • Year and Date
      2009-12-10
  • [Presentation] Observation of entangled photon interference beating the diffraction limit2009

    • Author(s)
      K. Sasaki
    • Organizer
      2009 International Conference on Optical Instrument Technology (OIT 2009)
    • Place of Presentation
      Shanghai Everbright Convention & Exhibition Center, China
    • Year and Date
      2009-10-19
  • [Book] Molecular Nano Dynamics Vol.1, Chap. 7 :Dynamic analysis using photon force measurement2009

    • Author(s)
      H. Fujiwara and K. Sasaki
    • Total Pages
      722
    • Publisher
      Wiley-VCH
  • [Remarks]

    • URL

      http://optsys2.es.hokudai.ac.jp/

URL: 

Published: 2013-07-31  

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