Control of grating-coupled ultrafast surface plasmon pulse and its nonlinear emission by shaping femtosecond laser pulse

Kazunori Toma, Yuta Masaki, Miyuki Kusaba, Kenichi Hirosawa, Fumihiko Kannari

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Spatiotemporal nanofocusing of ultrafast surface plasmon polaritons (SPPs) coupled on a metal Au tapered tip with a curvature radius of a few tens of nanometers is deterministically controlled based on the measured plasmon response function. We control the SPP pulse shape and the second harmonic generation at the apex of the Au tapered tip by shaping the excitation femtosecond laser pulses based on the response function. We also adapted a similar control scheme for coherent anti-Stokes Raman scattering (CARS) and achieved selective CARS excitation of a single Raman mode of carbon nanotubes with only a single excitation laser pulse at the apex of the tip.

Original languageEnglish
Article number103102
JournalJournal of Applied Physics
Volume118
Issue number10
DOIs
Publication statusPublished - 2015 Sep 14

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gratings
polaritons
apexes
pulses
Raman spectra
excitation
lasers
harmonic generations
carbon nanotubes
curvature
radii
metals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Control of grating-coupled ultrafast surface plasmon pulse and its nonlinear emission by shaping femtosecond laser pulse. / Toma, Kazunori; Masaki, Yuta; Kusaba, Miyuki; Hirosawa, Kenichi; Kannari, Fumihiko.

In: Journal of Applied Physics, Vol. 118, No. 10, 103102, 14.09.2015.

Research output: Contribution to journalArticle

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