Second-order nonlinear optics in isotropic liquids: Hyper-Rayleigh scattering in solution

Clays, Koen; Hendrickx, Eric; Triest, Myriam; Persoons, André

doi:10.1016/0167-7322(95)00872-1

Cited by 51 publications

(35 citation statements)

References 50 publications

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“…that β is highly sensitive to AuNP aggregation induced by increasing NaCl concentration and that HRS is at least an order of magnitude more sensitive at picking up aggregation in comparison to Rayleigh scattering (RS), showing that HRS is useful for biosensing assays . Pyridine also induces aggregation and has been shown to increase the HRS intensity by up to 10‐fold …”

Section: Introductionmentioning

confidence: 99%

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

et al. 2019

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Gold nanoparticles (AuNPs) are regarded as promising building blocks in functional nanomaterials for sensing, drug delivery and catalysis. One remarkable property of these particles is the localized surface plasmon resonance (LSPR), which gives rise to augmented optical properties through local field enhancement. LSPR also influences the nonlinear optical properties of metal NPs (MNPs) making them potentially interesting candidates for fast, high resolution nonlinear optical imaging. In this work we characterize and discuss the wavelength dependence of the hyper‐Rayleigh scattering (HRS) behavior of spherical gold nanoparticles (GNP) and gold nanorods (GNR) in solution, from 850 nm up to 1300 nm, covering the near‐infrared (NIR) window relevant for deep tissue imaging. The high‐resolution spectral data allows discriminating between HRS and two photon photoluminescence contributions. Upon particle aggregation, we measured very large enhancements (ca. 104) of the HRS intensity in the NIR, which is explained by considering aggregation‐induced plasmon coupling effects and local field enhancement. These results indicate that purposely designed coupled nanostructures could prove advantageous for nonlinear optical imaging and biosensing applications.

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Section: Introductionmentioning

confidence: 99%

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

et al. 2019

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“…The SHG study showed conclusively, via excitation profile measurements, that the nonlinear response is dramatically enhanced by resonance interactions with the gold plasmon band. There also exist several reports of HRS from silver nanoparticles -possibly the earliest reports of HRS from any nanoparticle [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Hyper-Rayleigh scattering studies of silver, copper, and platinum nanoparticle suspensions

Johnson

Hupp

et al. 2002

Chemical Physics Letters

142

109

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The optical frequency doubling properties of silver, copper, and platinum nanoparticles in aqueous solution are studied via hyper-Rayleigh scattering (HRS) spectroscopy. Substantial HRS responses are observed for silver and copper particles. The response is attributed to enhancement due to resonance of the nonlinearly scattered light with the particles' surface plasmon absorption band. Platinum particles, which lack visible-region plasmon absorption, do not display detectable HRS signals. The largest signals from silver particles are observed under conditions of two-photon resonance, qualitatively consistent with the predictions of available theory; smaller yet still impressive signals are observed under pre-and post-resonant conditions. Ó

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“…Experimentally, it has been reported that dispersions of gold clusters in polydiacetylenes induce an enhancement of the third-order susceptibility (χ (3) ) by two orders of magnitude in comparison to the polymer alone (31,32). In addition, strong hyper-Rayleigh scattering (HRS) has been observed for silver colloids in the presence of para-nitroaniline (33). Important factors such as particle aggregation, the actual distance of the chromophore to the surface, coupling of electronic excitations, and the particle shape have not been carefully considered.…”

Section: Introductionmentioning

confidence: 97%

Linear and nonlinear optical responses of a dye anchored to gold nanoparticles dispersed in liquid and polymeric matrixes

Vargas‐Baca¹,

Brown²,

Andrews³

et al. 2002

Can. J. Chem.

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The compound [4-CH 3 C 6 H 4 -SS-CH 2 CH 2 -N(CH 3 )C 6 H 4 C(C 6 H 4 N(CH 3 ) 2 )-4) 2 ]Cl (1a) consists of the triarylmethyl chromophore of crystal violet appended to an organic disulfide, to entail direct attachment of this dye to gold surfaces. Addition of 1a to colloidal dispersions of the metal produced a stable dispersion in methanol-water mixtures. Transmission electron microscopy of Freeze-Fracture sections shadowed with carbon and platinum confirmed that the dispersion remains unaggregated. Local-field effects and coupling to the surface plasmon of gold magnified the interaction of the chromophore with optical fields. A large oscillator strength in the visible spectrum (f ca. 35) and a first hyperpolarizability (β ca. 10 -26 esu, hyper-Rayleigh scattering) were observed as the colloid adsorbed dye molecules. A Hill-type analysis indicated that the adsorption process is cooperative. This combination of organic chromophore and nanoparticle was adapted for incorporation into PMMA-based composite films whose electrooptic coefficient (r 113 = 2.20 pm V -1 ) is larger than the sum of the individual contributions of dye and metallic particles. 2 ]Cl (1a) comprend le chromophore triarylméthyle du cristal violet fixé sur un disulfure organique qui permet d'attacher directement ce colorant sur des surfaces d'or. L'addition du composé 1a à des dispersions colloïdales du métal conduit à la formation d'une dispersion stable dans des mélanges méthanol-eau. La microscopie électronique de transmission de sections Freeze-Fracture ombragées par du carbone et du platine permet de confirmer que la dispersion dans un état qui n'est pas agrégé. Les effets de champs locaux et le couplage de l'or à la surface plasmonique amplifient l'interaction du chromophore avec les champs optiques. Avec l'absorption de molécules de colorant par le colloïde, on a observé une grande force oscillatoire dans le spectre visible (f d'environ 35) ainsi qu'une première hyperpolarisabilité (β environ 10 -26 esu, diffusion hyper-Rayleigh). Cette combinaison de chromophore organique et de nanoparticule est adaptée à une incorporation dans des films composites à base de PMMA dont le coefficient électrooptique (r 113 = 2,20 ppm V -1 ) est supérieur à la somme des contributions individuelles du colorant et des particules métalliques.

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Second-order nonlinear optics in isotropic liquids: Hyper-Rayleigh scattering in solution

Cited by 51 publications

References 50 publications

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

Hyper-Rayleigh scattering studies of silver, copper, and platinum nanoparticle suspensions

Linear and nonlinear optical responses of a dye anchored to gold nanoparticles dispersed in liquid and polymeric matrixes

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