Highly efficient coupling of photons from nanoemitters into single-mode optical fibers

Masazumi Fujiwara, Kiyota Toubaru, Tetsuya Noda, Hong Quan Zhao, Shigeki Takeuchi

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)

Abstract

Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. A percentage (7.4 ± 1.2%) of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300 nm diameter tapered fiber. The dependence of the coupling efficiency on the taper diameter was investigated and the coupling efficiency was found to increase exponentially with decreasing diameter. This method is very promising for nanoparticle sensing and single-photon sources.

Original languageEnglish
Pages (from-to)4362-4365
Number of pages4
JournalNano Letters
Volume11
Issue number10
DOIs
Publication statusPublished - Oct 12 2011
Externally publishedYes

Keywords

  • coupling efficiency
  • high numerical aperture
  • nanocrystal
  • photon collection optic
  • single-photon
  • source
  • tapered fiber

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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