Optical Second Harmonic Generation of Single Metallic Nanoparticles Embedded in a Homogeneous Medium

Butet, Jérémy; Duboisset, Julien; Bachelier, Guillaume; Russier‐Antoine, Isabelle; Bénichou, Emmanuel; Jonin, Christian; Brevet, Pierre‐François

doi:10.1021/nl1000949

Cited by 230 publications

(228 citation statements)

References 26 publications

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“…First, it can lead to nonlinear optical processes like two-photon luminescence or second harmonic generation with applications mainly in bio-imaging. 11,12 Then, it can trigger a sudden temperature increase at the sub-nanosecond scale and subsequent effects such as acoustic waves used for opto-acoustic imaging 13,14 or bubble formation for nanosurgery. 15 A sharp and brief temperature increase of a NP generated by a femtosecond laser can also contribute to confine the temperature increase at the close vicinity of the NP to avoid extended heating of the whole medium when not desired.…”

Section: 10mentioning

confidence: 99%

Femtosecond-pulsed optical heating of gold nanoparticles

2011

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We investigate theoretically and numerically the thermodynamics of gold nanoparticles immersed in water and illuminated by a femtosecond-pulsed laser at their plasmonic resonance. The spatiotemporal evolution of the temperature profile inside and outside is computed using a numerical framework based on a Runge-Kutta algorithm of the fourth order. The aim is to provide a comprehensive description of the physics of heat release of plasmonic nanoparticles under pulsed illumination, along with a simple and powerful numerical algorithm. In particular, we investigate the amplitude of the initial instantaneous temperature increase, the physical differences between pulsed and cw illuminations, the time scales governing the heat release into the surroundings, the spatial extension of the temperature distribution in the surrounding medium, the influence of a finite thermal conductivity of the gold/water interface, the influence of the pulse repetition rate of the laser, the validity of the uniform temperature approximation in the metal nanoparticle, and the optimum nanoparticle size (around 40nm) to achieve maximum temperature increase.

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Section: 10mentioning

confidence: 99%

Femtosecond-pulsed optical heating of gold nanoparticles

2011

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“…Au NPs are known to undergo both SH generation 26,27 and two-photon absorption, giving rise to twophoton photoluminescence (TPPL). 28 The onset of TPPL emission spectrally overlaps with the long wavelength part of the SH spectrum.…”

Section: Control Of Fs Pulses For Ultrafast Nanophotonics N Accanto Ementioning

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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“…The experimental study is performed with second harmonic generation (SHG) microscopy, a technique whose usefulness for visualizing fi eld enhancements in nanostructures has been demonstrated in several works already. [22][23][24][25][26][27] We use ultrafast pulsed lasers ( ∼ 100 fs, 82 MHz), which are capable of delivering very high electric fi eld intensities to the electron population in the nanostructures. When the intense electric fi eld of light becomes comparable with the electric near-fi elds, the oscillations of the electron density are driven in the nonlinear (anharmonic) regime.…”

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confidence: 99%

Distributing the Optical Near‐Field for Efficient Field‐Enhancements in Nanostructures

et al. 2012

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Circularly polarized light imparts a sense of rotation on the electron density in ring‐shaped gold nanostructures. As a consequence, the near‐field enhancement becomes homogeneous on the surface of the nanostructures, thereby increasing the opportunity for interaction with molecules. This type of nanostructured samples can find a broad range of applications in chemical processes where the interaction between molecules and local field enhancements play an important role.

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Optical Second Harmonic Generation of Single Metallic Nanoparticles Embedded in a Homogeneous Medium

Cited by 230 publications

References 26 publications

Femtosecond-pulsed optical heating of gold nanoparticles

Femtosecond-pulsed optical heating of gold nanoparticles

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

Distributing the Optical Near‐Field for Efficient Field‐Enhancements in Nanostructures

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