Abstract
We investigated the surface-enhanced Raman scattering activity and spatio-temporal characteristics of plasmons excited on a rough gold film using ultrafast near-field optical microscopy. Near-field nonlinear excitation images showed a number of optically amplified spots on the sample surface. Raman scattering from molecules dispersed on the sample was enhanced at the amplified fields in a space-selective manner. Time-resolved near-field measurements revealed that the dephasing time varies depending on the excited plasmon. We evaluated the resonant mode volume from the Raman signal enhancement and the dephasing time of the plasmon, and found that the volume is on the same order as the one estimated from the topography of the sample.
| Original language | English |
|---|---|
| Title of host publication | Frontiers of Plasmon Enhanced Spectroscopy, Volume 2 |
| Publisher | American Chemical Society |
| Pages | 121-137 |
| Number of pages | 17 |
| Volume | 1246 |
| ISBN (Electronic) | 9780841232013 |
| DOIs | |
| Publication status | Published - 2016 |
Publication series
| Name | ACS Symposium Series |
|---|---|
| Volume | 1246 |
| ISSN (Print) | 00976156 |
| ISSN (Electronic) | 19475918 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Raman activity and dynamics of plasmons on a rough gold film studied by ultrafast scanning near-field optical microscopy. / Imaeda, Keisuke; Imura, Kohei.
Frontiers of Plasmon Enhanced Spectroscopy, Volume 2. Vol. 1246 American Chemical Society, 2016. p. 121-137 (ACS Symposium Series; Vol. 1246).Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Raman activity and dynamics of plasmons on a rough gold film studied by ultrafast scanning near-field optical microscopy
AU - Imaeda, Keisuke
AU - Imura, Kohei
PY - 2016
Y1 - 2016
N2 - We investigated the surface-enhanced Raman scattering activity and spatio-temporal characteristics of plasmons excited on a rough gold film using ultrafast near-field optical microscopy. Near-field nonlinear excitation images showed a number of optically amplified spots on the sample surface. Raman scattering from molecules dispersed on the sample was enhanced at the amplified fields in a space-selective manner. Time-resolved near-field measurements revealed that the dephasing time varies depending on the excited plasmon. We evaluated the resonant mode volume from the Raman signal enhancement and the dephasing time of the plasmon, and found that the volume is on the same order as the one estimated from the topography of the sample.
AB - We investigated the surface-enhanced Raman scattering activity and spatio-temporal characteristics of plasmons excited on a rough gold film using ultrafast near-field optical microscopy. Near-field nonlinear excitation images showed a number of optically amplified spots on the sample surface. Raman scattering from molecules dispersed on the sample was enhanced at the amplified fields in a space-selective manner. Time-resolved near-field measurements revealed that the dephasing time varies depending on the excited plasmon. We evaluated the resonant mode volume from the Raman signal enhancement and the dephasing time of the plasmon, and found that the volume is on the same order as the one estimated from the topography of the sample.
UR - http://www.scopus.com/inward/record.url?scp=85007275586&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007275586&partnerID=8YFLogxK
U2 - 10.1021/bk-2016-1246.ch006
DO - 10.1021/bk-2016-1246.ch006
M3 - Chapter
AN - SCOPUS:85007275586
VL - 1246
T3 - ACS Symposium Series
SP - 121
EP - 137
BT - Frontiers of Plasmon Enhanced Spectroscopy, Volume 2
PB - American Chemical Society
ER -