Reduction of graphene oxide by nanofocused ultrafast surface plasmon pulses

Keita Tomita, Takumi Matsuda, Fumihiko Kannari

Research output: Contribution to journalArticlepeer-review


We used ultrafast surface plasmon polariton (SPP) pulses that were focused into several tens of nm at the apex of a tapered metal tip to induce photoreduction of graphene oxide (GO), and we successfully fabricated nano graphene stripes with a minimum width of ∼200 nm. GO was reduced using about 1010 shots of SPP pulse irradiation. We evaluated the GO reduction with selective in situ coherent anti-Stokes Raman scattering measurements using spectrally focused SPP pulses.

Original languageEnglish
Pages (from-to)2441-2452
Number of pages12
JournalOSA Continuum
Issue number9
Publication statusPublished - 2020 Sept 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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