• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Near-field polarization analysis for an optical nanofiber

Research Project

Project/Area Number 18F18367
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

NICCHORMAIC SILE  沖縄科学技術大学院大学, 量子技術のための光・物質相互作用ユニット, 教授 (10715288)

Co-Investigator(Kenkyū-buntansha) TKACHENKO GEORGIY  沖縄科学技術大学院大学, 量子技術のための光・物質相互作用ユニット, 外国人特別研究員
Project Period (FY) 2018-11-09 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2020: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2019: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2018: ¥600,000 (Direct Cost: ¥600,000)
Keywordsnanofiber / polarization / spin-orbit coupling / chiral / optical nanofiber / polarization control / directional coupling / whispering gallery mode / optomechanical probe / two-photon atomic spectroscopy / nanofibre / control
Outline of Annual Research Achievements

During the year, the polarization control in optical nanofibres has been further improved enabling studies on spin-orbit coupling for optically trapped chiral particles adjacent to an optical nanofibre. Spin angular momentum in electromagnetic waves is caused not only by field rotations associated with elliptical polarization, but also by spatial modulations of the field. Consequently, the spin carried by light does not have to be parallel to the energy transfer. Transverse components can be significant in strongly confined light, such as evanescent fields. Here, the transverse spin was revealed through its direct action on a probe particle held and spun by optical tweezers in the evanescent field at the surface of a nanofiber. The work has benefitted from a theoretical model developed by colleagues in ITMO, Russia. This work has been presented at several conferences (including OPIC 2021) and is being prepared for publication.
A second work has also been conducted building on the polarization control. Composite material objects such as Janus particles can exhibit interesting dynamics, such as propulsion in response to an external gradient field or collective assembly due to a generated localized thermal gradient around each particle. In this study, we demonstrated light-induced dynamics of metallo-dielectric Janus microspheres with a thin layer of gold that are trapped and propelled in the evanescent field of a nanofiber. We found that Janus particles with a 10 nm or 20 nm gold coating exhibit propulsion speed enhancements compared with uncoated silica microspheres.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (13 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Observation of the 87Rb 5S1/2 to 4D3/2 electric quadrupole transition at 516.6 nm mediated via an optical nanofibre2020

    • Author(s)
      Tridib Ray, Ratnesh K Gupta, Vandna Gokhroo, Jesse L Everett, Thomas Nieddu, Krishnapriya S Rajasree, Sile Nic Chormaic
    • Journal Title

      New Journal of Physics

      Volume: 22 Issue: 3 Pages: 062001-062001

    • DOI

      10.1103/physrevresearch.2.033341

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity2020

    • Author(s)
      Fuchuan Lei, Georgiy Tkachenko, Xuefeng Jiang, Jonathan M. Ward, Lan Yang, and Sile Nic Chormaic
    • Journal Title

      ACS Photonics

      Volume: 7 Issue: 2 Pages: 361-365

    • DOI

      10.1021/acsphotonics.9b01611

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Light-induced rotation of dielectric microparticles around an optical nanofiber2020

    • Author(s)
      Georgiy Tkachenko, Ivan Toftul, Cindy Esporlas, Aili Maimaiti, Fam Le Kien, Viet Giang Truong, and Sile Nic Chormaic
    • Journal Title

      Optica

      Volume: 7 Issue: 1 Pages: 59-62

    • DOI

      10.1364/optica.374441

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Complete Polarization Control for a Nanofiber Waveguide Using Directional Coupling2019

    • Author(s)
      Fuchuan Lei, Georgiy Tkachenko, Jonathan M. Ward, and Sile Nic Chormaic
    • Journal Title

      Physical Review Applied

      Volume: 11 Issue: 6 Pages: 064041-064041

    • DOI

      10.1103/physrevapplied.11.064041

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Polarisation control for optical nanofibres by imaging through a single lens2019

    • Author(s)
      Georgiy Tkachenko, Fuchuan Lei and Sie Nic Chormaic
    • Journal Title

      Journal of Optics

      Volume: 21 Issue: 12 Pages: 125604-125604

    • DOI

      10.1088/2040-8986/ab5204

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Using optical fibers for particle trapping and manipulation2021

    • Author(s)
      Sile Nic Chormaic
    • Organizer
      OPIC - OMC2021
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Detection of the transverse spin of light by twisting anisotropic particles near an optical nanofiber waveguide2021

    • Author(s)
      Georgiy Tkachenko, I Toftul, A Vylegzhanin, V G Truong, M Petrov and S Nic Chormaic
    • Organizer
      OPIC - OMC2021
    • Related Report
      2020 Annual Research Report
  • [Presentation] Using optical fibers for particle trapping and manipulation2021

    • Author(s)
      Sile Nic Chormaic
    • Organizer
      iophotonics Congress: Optics in the Life Sciences Online
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Near-field optomechanics with nanofiber waveguides2021

    • Author(s)
      G Tkachenko, I Toftul, C Esporlas, VG Truong, MI Petrov and S Nic Chormaic
    • Organizer
      NCTS Annual Meeting on Quantum Science and Technology, National Tsing Hua University, Taiwan
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Optomechanics with single-mode optical nanofibers2020

    • Author(s)
      G Tkachenko, I Toftul, VG Truong, MI Petrov and S Nic Chormaic
    • Organizer
      OSJ-OSA-OSK Joint Symposia on Optics, OPJ 2020 Online Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Polarization control for single-mode optical nanofibers: fundamentals and applications2020

    • Author(s)
      Georgiy Tkachenko
    • Organizer
      SPIE Photonics West, OPTO: Complex Light and Optical Forces XIV
    • Related Report
      2019 Annual Research Report
  • [Presentation] Controlling Polarization in Optical Nanofibers Using Directional Coupling of Light2019

    • Author(s)
      Georgiy Tkachenko
    • Organizer
      International Conference on Nano-photonics and Nano-optoelectronics
    • Related Report
      2019 Annual Research Report
  • [Presentation] Controlling polarization in optical nanofibers using directional coupling of light2019

    • Author(s)
      Fuchuan Lei
    • Organizer
      ONNA: Optical Nanofibre Applications
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2018-11-12   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi