Ultrafast resonant optical scattering from single gold nanorods: Large nonlinearities and plasmon saturation

Matthew Pelton; Mingzhao Liu; Sungnam Park; Norbert F. Scherer; Philippe Guyot-Sionnest

doi:10.1103/PhysRevB.73.155419

Ultrafast resonant optical scattering from single gold nanorods: Large nonlinearities and plasmon saturation

Matthew Pelton, Mingzhao Liu, Sungnam Park, Norbert F. Scherer, Philippe Guyot-Sionnest

Research output: Contribution to journal › Article › peer-review

114 Citations (Scopus)

Abstract

We measure nonlinear optical scattering from individual Au nanorods excited by ultrafast laser pulses on resonance with their longitudinal plasmon mode. Isolating single rods removes inhomogeneous broadening and allows the measurement of a large nonlinearity, much greater than that of nanorod ensembles. Surprisingly, the ultrafast nonlinearity can be attributed entirely to heating of conduction electrons and does not exhibit any response associated with coherent plasmon oscillation. This indicates an unanticipated damping of strongly driven plasmons.

Original language	English
Article number	155419
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	73
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.73.155419
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We measure nonlinear optical scattering from individual Au nanorods excited by ultrafast laser pulses on resonance with their longitudinal plasmon mode. Isolating single rods removes inhomogeneous broadening and allows the measurement of a large nonlinearity, much greater than that of nanorod ensembles. Surprisingly, the ultrafast nonlinearity can be attributed entirely to heating of conduction electrons and does not exhibit any response associated with coherent plasmon oscillation. This indicates an unanticipated damping of strongly driven plasmons.",

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