Detection of Acoustic Oscillations of Single Gold Nanospheres by Time-Resolved Interferometry

Dijk, Meindert A. van; Lippitz, Markus; Orrit, Michel

doi:10.1103/physrevlett.95.267406

Cited by 212 publications

(300 citation statements)

References 21 publications

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“…Various kinds of single-nanoparticle spectroscopy using confocal optical microscopes become feasible, and allow us to obtain valuable information on electron dynamics and non-linearities of the nanoparticles. [95][96][97][98][99] The spatial resolution in this case is limited, however, by the diffraction limit of light. Hence, the dynamic processes observed are spatially averaged over the particle volume.…”

Section: 88mentioning

confidence: 99%

Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wave Functions of Nanomaterials

Imura¹,

Okamoto²

2008

Bulletin of the Chemical Society of Japan

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We have developed novel methods of near-field microspectroscopy by combining near-field optical microscopy with linear and non-linear optical techniques. The developed near-field microscope achieves high spatial resolution and high time resolution, and is applied to studies of local excitations and wave functions of single noble metal nanoparticles. We demonstrate that the plasmon wave functions and the optical fields in the vicinity of nanoparticles are visualized by the near-field methods. Based on these results, we clearly show that localized electromagnetic field enhancement in the vicinity of nanoparticles is one of the most important factors in surface-enhanced spectroscopies. We also extended the methods to ultrafast optical measurements, and show space-resolved ultrafast transient response of single gold nanorods. The characteristic spatio-temporal features observed in the nanorods are revealed to be arising from the changes of the plasmon-mode wave functions upon elevation of photo-induced electronic temperature of the nanorod.

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Section: 88mentioning

confidence: 99%

Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wave Functions of Nanomaterials

Imura¹,

Okamoto²

2008

Bulletin of the Chemical Society of Japan

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“…By contrast, isolating single particles allows the quantitative measurement of inherent properties. 15,16,17 We report the first measurements of resonant nonlinearities of surface plasmons in single metal nanoparticles, specifically Au nanorods. 18,19 We measure a nonlinear scattering cross-section that is much larger than that obtained from ensembles of nanorods.…”

Section: 5mentioning

confidence: 99%

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

et al. 2006

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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 a previously unobserved damping of strongly driven plasmons.

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“…This sensitivity to size and shape, however, makes studies of ensembles of nanoparticles particularly vulnerable to distributions in sizes, shapes, crystal defects, etc.. Isolating a single particle once and for all eliminates inhomogeneous broadening and any implicit averaging inherent to even the most carefully selected ensembles. Only single-particle experiments permit to study a particle's elastic interaction with its specific close environment [5], to correlate optical and structural properties [6], or to obtain new insight in their linear and nonlinear optical properties [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

A common-path interferometer for time-resolved and shot-noise-limited detection of single nanoparticles

Dijk¹,

Lippitz²,

Stolwijk³

et al. 2007

Opt. Express

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Abstract:We give a detailed description of a novel method for time-resolved experiments on single non-luminescent nanoparticles. The method is based on the combination of pump-probe spectroscopy and a common-path interferometer. In our interferometer, probe and reference arms are separated in time and polarization by a birefringent crystal. The interferometer, fully described by an analytical model, allows us to separately detect the real and imaginary contributions to the signal. We demonstrate the possibilities of the setup by time-resolved detection of single gold nanoparticles as small as 10 nm in diameter, and of acoustic oscillations of particles larger than 40 nm in diameter.

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Detection of Acoustic Oscillations of Single Gold Nanospheres by Time-Resolved Interferometry

Cited by 212 publications

References 21 publications

Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wave Functions of Nanomaterials

Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wave Functions of Nanomaterials

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

A common-path interferometer for time-resolved and shot-noise-limited detection of single nanoparticles

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