Effect of visible pulse shaping on the accuracy of relative intensity measurements in BBSFG vibrational spectroscopy

Wang, Jijin; Dubost, H.; Ghalgaoui, Ahmed; Zheng, Wanquan; Carrez, Serge; Ouvrard, A.; Bourguignon, Bernard

doi:10.1016/j.susc.2014.03.017

Cited by 13 publications

(16 citation statements)

References 29 publications

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“…In such experiments, only the infrared wavelength is tuned and the nonlinear signals from gold and molecular layers interfere in the SFG vibrational spectra. 10,11 Depending on the information sought, several strategies have been used to either remove the substrate contribution using broadband femtosecond setups 12,13 or obtain phase information from the interference pattern between gold and molecular contributions. 10,14 Alternatively, phase sensitive SFG experiments provide direct access to the absolute phase of the complex nonlinear response.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical response of a gold surface in the visible range: A study by two-color sum-frequency generation spectroscopy. I. Experimental determination

Dalstein

Revel

Humbert

et al. 2018

The Journal of Chemical Physics

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We experimentally determine the effective nonlinear second-order susceptibility of gold over the visible spectral range. To reach that goal, we probe by vibrational two-color sum-frequency generation spectroscopy the methyl stretching region of a dodecanethiol self-assembled monolayer adsorbed on a gold film. The sum-frequency generation spectra show a remarkable shape reversal when the visible probe wavelength is tuned from 435 to 705 nm. After correcting from Fresnel effects, the methyl stretching vibrations serve as an internal reference, allowing to extract the dispersion of the absolute phase and relative amplitude of the effective nonlinear optical response of gold in the visible range.

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Section: Introductionmentioning

confidence: 99%

Nonlinear optical response of a gold surface in the visible range: A study by two-color sum-frequency generation spectroscopy. I. Experimental determination

Dalstein

Revel

Humbert

et al. 2018

The Journal of Chemical Physics

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“…Details of SFG spectrum fitting and band deconvolution are given elsewhere. 44,45 STM and SFG measurements were performed at a given coverage while DRS was recorded in real-time during the growth. between bare alumina and perylene on alumina.…”

Section: ◼ Experimental Methodsmentioning

confidence: 99%

Ordered Hybrid Assembly of Palladium Nanoparticles and Perylene Molecules on an Alumina Template

et al. 2019

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Combining in a synergic way inorganic and organic matter at nanometre level has become a key research pathway for nanoelectronics, light harvesting, energy storage or sensing. Herein, we demonstrate the nanoscale ordering at room temperature of a two-dimensional hybrid assembly combining a long-range ordered array of Pd nanoparticles (NPs) with perylene molecules. The ordering, driven by the periodic superstructure of the Al2O3 ultrathin layer support, has been achieved for 0.9 nm diameter NPs and flat-lying molecules with a 2:1 perylene:NP relative ratio. At larger NP size and perylene coverage, molecules tilt up on alumina and adsorb on NPs. Combined near-field microscopy and optical spectroscopies provide a detailed understanding of the structural properties as a function of NP size and molecular coverage. This hybrid assembly opens the way to study at the molecular level the optical and electronic properties resulting from the coupling of organic molecules and nanoparticles using multi-scale surface sensitive techniques.

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“…The VIS pulse is made by spectrally narrowing 20% of the laser output to a FWHM of 0.6 nm (10 cm −1 ) by a pulse shaper. 22 The IR pulse is generated using a home-built Optical Parametric Amplifier FIG. 1.…”

Section: Methodsmentioning

confidence: 99%

Freezing effects of oil-in-water emulsions studied by sum-frequency scattering spectroscopy

Smit

Smolentsev

Versluis

et al. 2016

The Journal of Chemical Physics

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Temperature-dependent sum-frequency scattering spectroscopy is used to study the properties of hexadecane and dodecane oil droplets in water. The sum-frequency scattering spectra contain vibrational bands that correspond to the symmetric and antisymmetric CH stretching vibrations of the methylene (CH2) and methyl (CH3) groups of the alkane molecules. The relative amplitudes of the vibrational bands provide information on the surface structure and the shape of the oil droplets. We study the sum-frequency scattering spectra over a temperature range of -48 to 24 °C, including the freezing transitions of the water matrix and the oil droplets. Hexadecane oil droplets freeze at a higher temperature than the surrounding water, whereas dodecane oil droplets freeze at a lower temperature than the surrounding water. This allows us to independently study the freezing effect of oil and water on the surface structure of the oil droplets. In both cases, freezing leads to a change in the polarization dependencies that are valid in the case of the spherical-symmetric shapes that the oil droplets assume when both water and oil are liquid. We find that the freezing of water leads to a strong distortion of the liquid dodecane surface but has little effect on the surface of already solidified hexadecane. For completely frozen emulsions a further decrease in temperature is observed to lead to a further distortion of the surface of the solid oil particles, which might be caused by increasing hardness of the ice matrix encapsulating the particles.

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Effect of visible pulse shaping on the accuracy of relative intensity measurements in BBSFG vibrational spectroscopy

Cited by 13 publications

References 29 publications

Nonlinear optical response of a gold surface in the visible range: A study by two-color sum-frequency generation spectroscopy. I. Experimental determination

Nonlinear optical response of a gold surface in the visible range: A study by two-color sum-frequency generation spectroscopy. I. Experimental determination

Ordered Hybrid Assembly of Palladium Nanoparticles and Perylene Molecules on an Alumina Template

Freezing effects of oil-in-water emulsions studied by sum-frequency scattering spectroscopy

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