Dynamics of Four-Photon Photoluminescence in Gold Nanoantennas

Biagioni, Paolo; Brida, Daniele; Huang, Jer-Shing; Kern, Johannes; Duó, Lamberto; Hecht, Bert; Finazzi, Marco; Cerullo, Giulio

doi:10.1021/nl300616s

Cited by 88 publications

(136 citation statements)

References 29 publications

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“…[4][5][6][7] However, there are two fundamental limitations on the confinement of light in the femtosecond and nanometer regimes: on the one hand, femtosecond pulses are prone to becoming distorted in the phase domain while propagating through dispersive elements, such as lenses or objectives. Such distortions typically result in a stretched pulse: i.e., longer than the Fourier limit.…”

Section: Introductionmentioning

confidence: 99%

Phase control of femtosecond pulses on the nanoscale using second harmonic nanoparticles

et al. 2014

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Investigations of ultrafast processes occurring on the nanoscale require a combination of femtosecond pulses and nanometer spatial resolution. However, controlling femtosecond pulses with nanometer accuracy is very challenging, as the limitations imposed both by dispersive optics on the time duration of a pulse and by the spatial diffraction limit on the focusing of light must be overcome simultaneously. In this paper, we provide a universal method that allows full femtosecond pulse control in subdiffraction-limited areas. We achieve this aim by exploiting the intrinsic coherence of the second harmonic emission from a single nonlinear nanoparticle of deep subwavelength dimensions. The method is proven to be highly sensitive, easy to use, quick, robust and versatile. This approach allows measurements of minimal phase distortions and the delivery of tunable higher harmonic light in a nanometric volume. Moreover, the method is shown to be compatible with a wide range of particle sizes, shapes and materials, allowing easy optimization for any given sample. This method will facilitate the investigation of light-matter interactions on the femtosecond-nanometer level in various areas of scientific study.

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Section: Introductionmentioning

confidence: 99%

Phase control of femtosecond pulses on the nanoscale using second harmonic nanoparticles

et al. 2014

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“…Two-photon excitation at ~ 800 nm may overlap with the LSPR of the Au nanostructures, causing photothermal damage. The use of three-photon [194] and four-photon [195] schemes have been demonstrated to generate photoluminescence while overcome the photothermal effect.…”

Section: Multiphoton Luminescencementioning

confidence: 99%

Plasmonic Nanostructures for Biomedical and Sensing Applications

Jenkins

Muldoon

Chen

2014

Metallic Nanostructures

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Noble metal nanostructures are appealing for therapeutic, diagnostics, and sensing applications because of their unique optical properties and biocompatibility. The collective oscillation of electrons in a metal nanostructure resonates with particular wavelengths of light, generating the localized surface plasmon resonance (LSPR). The LSPR results in absorption and scattering of incoming photons. Absorption leads to photothermal generation of heat, photoluminescence, and quenching of fluorophores in close proximity. Scattering results in reflected photons and its amplification of the local electromagnetic field can enhance fluorescence, phosphorescence, and Raman scattering. These optical properties make plasmonic nanostructures ideal candidates for theranostic applications including light-induced thermal therapy, drug/gene delivery, and biomedical imaging. The use of plasmonic nanostructures for ex vivo detection of chemicals and biomolecules are also discussed in this chapter.

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“…Due to the strong field enhancement, they can efficiently enhance nonlinear light generation such as two- [3] and four-photon photoluminescence [4], second-harmonic [5], third-harmonic [6][7][8], and even fifth-harmonic generation [9]. In particular, the influence of the antenna volume on the third-harmonic intensity [6,8] as well as the third-harmonic polarization [7] has been investigated.…”

Section: Introductionmentioning

confidence: 99%