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

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

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...

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Hyper-rayleigh Scattering and Surface-enhanced Raman Scattering Studies of Platinum Nanoparticle Suspensions

Platinum nanoparticles (ptNPs) in the water are synthesized by nanosecond pulsed laser ablation of a pure platinum plate in the distilled water. Using hyper-Rayleigh scattering (HRS) spectroscopy is observed considerable HRS responses. Pt nanoparticles do not have visible-region plasmon absorption, do not represent clear HRS signals, whereas surprisingly, they exhibit strong surface-enhanced Ra...

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Hyper-Rayleigh scattering from silver nanoparticles

We experimentally demonstrate for the first time the existence of distinguishable contributions to hyper-Rayleigh scattering ~HRS! intensities from Ag nanoparticles arising from electric–dipole and electric–quadrupole plasmon resonances at the emitted wavelength. We show that these results can be successfully modeled using an electromagnetic theory of HRS which assumes a surface-induced nonline...

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Hyper-Rayleigh scattering spectrum of liquid nitromethane.

The vertical vertical (VV), horizontal vertical (HV), and vertical horizontal (VH) hyper-Rayleigh scattering (HRS) spectra were measured for liquid CH3NO2 at T= 300 K. The main HRS spectral component has a width upsilon1=1.28 +/- 0.04 cm(-1), which gives an orientation relaxation time pi=4.1 +/- 0.1 ps in good agreement with other experiments. However, the VH spectrum also contains a previously...

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An apparatus is described for the measurement of second-order nonlinear optical properties via hyper-Rayleigh scattering with 1 cm spectral resolution of the scattered light. The setup allows a complete investigation of the polarization dependence of the second-harmonic scattered light. The combination of good spectral resolution, polarization analysis, and high sensitivity allows the determina...

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ژورنال

عنوان ژورنال: Chemical Physics Letters

سال: 2002

ISSN: 0009-2614

DOI: 10.1016/s0009-2614(02)00407-4