Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle

K. Imura; T. Nagahara; H. Okamoto

Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle

K. Imura^*, T. Nagahara, H. Okamoto

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We investigated near-field optical properties of single gold nanorods with spatial resolution down to 50 nm. Gold nanorods show transverse and longitudinal surface plasmon resonances in visible and near-infrared region, respectively. Transmission images observed near the resonances agree qualitatively with calculated electromagnetic local density of states, and are reflected by spatial characteristics of plasmon eigenfunctions. Ultrafast temporal responses of local density of states have been imaged by combining near-field microscope with time-resolved technique. It has been found that dynamic behavior of surface plasmon in the center of the rod is different from that in the both ends.

Original language	English
Title of host publication	International Conference on Ultrafast Phenomena, UP 2004
Publisher	Optica Publishing Group (formerly OSA)
ISBN (Electronic)	3540241108
Publication status	Published - 2004
Externally published	Yes
Event	International Conference on Ultrafast Phenomena, UP 2004 - Niigata, Japan Duration: 2004 Jul 25 → 2004 Jul 30

Publication series

Name	Optics InfoBase Conference Papers
ISSN (Electronic)	2162-2701

Conference

Conference	International Conference on Ultrafast Phenomena, UP 2004
Country/Territory	Japan
City	Niigata
Period	04/7/25 → 04/7/30

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Mechanics of Materials

Cite this

Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle. / Imura, K.; Nagahara, T.; Okamoto, H.
International Conference on Ultrafast Phenomena, UP 2004. Optica Publishing Group (formerly OSA), 2004. TuC5 (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

@inproceedings{0d331420a9fa42a9b89305ece227f6f6,

title = "Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle",

abstract = "We investigated near-field optical properties of single gold nanorods with spatial resolution down to 50 nm. Gold nanorods show transverse and longitudinal surface plasmon resonances in visible and near-infrared region, respectively. Transmission images observed near the resonances agree qualitatively with calculated electromagnetic local density of states, and are reflected by spatial characteristics of plasmon eigenfunctions. Ultrafast temporal responses of local density of states have been imaged by combining near-field microscope with time-resolved technique. It has been found that dynamic behavior of surface plasmon in the center of the rod is different from that in the both ends.",

author = "K. Imura and T. Nagahara and H. Okamoto",

note = "Publisher Copyright: {\textcopyright} 2003 Optical Society of America.; International Conference on Ultrafast Phenomena, UP 2004 ; Conference date: 25-07-2004 Through 30-07-2004",

year = "2004",

language = "English",

series = "Optics InfoBase Conference Papers",

publisher = "Optica Publishing Group (formerly OSA)",

booktitle = "International Conference on Ultrafast Phenomena, UP 2004",

}

TY - GEN

T1 - Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle

AU - Imura, K.

AU - Nagahara, T.

AU - Okamoto, H.

PY - 2004

Y1 - 2004

N2 - We investigated near-field optical properties of single gold nanorods with spatial resolution down to 50 nm. Gold nanorods show transverse and longitudinal surface plasmon resonances in visible and near-infrared region, respectively. Transmission images observed near the resonances agree qualitatively with calculated electromagnetic local density of states, and are reflected by spatial characteristics of plasmon eigenfunctions. Ultrafast temporal responses of local density of states have been imaged by combining near-field microscope with time-resolved technique. It has been found that dynamic behavior of surface plasmon in the center of the rod is different from that in the both ends.

AB - We investigated near-field optical properties of single gold nanorods with spatial resolution down to 50 nm. Gold nanorods show transverse and longitudinal surface plasmon resonances in visible and near-infrared region, respectively. Transmission images observed near the resonances agree qualitatively with calculated electromagnetic local density of states, and are reflected by spatial characteristics of plasmon eigenfunctions. Ultrafast temporal responses of local density of states have been imaged by combining near-field microscope with time-resolved technique. It has been found that dynamic behavior of surface plasmon in the center of the rod is different from that in the both ends.

UR - http://www.scopus.com/inward/record.url?scp=85136128088&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85136128088&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85136128088

T3 - Optics InfoBase Conference Papers

BT - International Conference on Ultrafast Phenomena, UP 2004

PB - Optica Publishing Group (formerly OSA)

T2 - International Conference on Ultrafast Phenomena, UP 2004

Y2 - 25 July 2004 through 30 July 2004

ER -

Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle

Abstract

Publication series

Conference

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this