Adsorption kinetics of n‐alkyl thiols on gold studied by second harmonic generation and x‐ray photoelectron spectroscopy

1992 ◽  
Vol 10 (4) ◽  
pp. 926-929 ◽  
Author(s):  
M. Buck ◽  
M. Grunze ◽  
F. Eisert ◽  
J. Fischer ◽  
F. Träger
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Photoelectron Spectroscopy ◽  
Second Harmonic ◽  
X Ray ◽  
Kinetics Of

Adsorption Kinetics of Ultrathin Polymer Films in the Melt Probed by Dielectric Spectroscopy and Second-Harmonic Generation

Langmuir ◽  
2011 ◽  
Vol 27 (22) ◽  
pp. 13533-13538 ◽  
Author(s):  
Cinzia Rotella ◽  
Simone Napolitano ◽  
Stefaan Vandendriessche ◽  
Ventsislav K. Valev ◽  
Thierry Verbiest ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Polymer Films ◽  
Dielectric Spectroscopy ◽  
Second Harmonic ◽  
Ultrathin Polymer Films ◽  
Kinetics Of

Comparative second harmonic generation and X-ray photoelectron spectroscopy studies of the UV creation and O2 healing of Ti3+ defects on (110) rutile TiO2 surfaces

1995 ◽  
Vol 339 (1-2) ◽  
pp. 114-124 ◽  
Author(s):  
Ashley N. Shultz ◽  
Winyann Jang ◽  
W.M. Hetherington ◽  
D.R. Baer ◽  
Li-Qiong Wang ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Photoelectron Spectroscopy ◽  
Second Harmonic ◽  
Rutile Tio2 ◽  
X Ray ◽  
Spectroscopy Studies

Two-step adsorption kinetics of malachite green on anionic polystyrene microspheres in aqueous solution probed by second harmonic generation

2017 ◽  
Vol 19 (32) ◽  
pp. 21887-21892 ◽  
Author(s):  
Joon Heon Kim
Keyword(s):  
Aqueous Solution ◽  
Second Harmonic Generation ◽  
Malachite Green ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Second Harmonic ◽  
Organic Cations ◽  
Polystyrene Microspheres ◽  
Generation Technique ◽  
Kinetics Of

Adsorption of organic cations of malachite green on anionic microspheres was monitored in real time using a surface-specific second-harmonic generation technique, and its two-step characteristic was investigated.

Optical Second Harmonic Generation of Thiols Adsorbed on Gold

1991 ◽  
Vol 237 ◽  
Author(s):  
M. Buck ◽  
F. Eisert ◽  
J. Fischer ◽  
M. Grunze ◽  
F. Träger
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Photoelectron Spectroscopy ◽  
Second Harmonic ◽  
Ex Situ ◽  
Nonlinear Susceptibility ◽  
Self Assembling ◽  
Optical Second Harmonic Generation ◽  
Saturation Coverage

AbstractThe adsorption kinetics of self-assembling n-alkyl thiol films on poly cry stalline gold substrates was studied in situ by optical second harmonic generation (SHG). The relation between the SHG signal change and the thiol coverage was established by comparison with ex situ X-ray photoelectron spectroscopy measurements. We find that the temporal dependence of the adsorption is well described by Langmuir adsorption kinetics. The source of the SHG signal is found to be linearly related to the nonlinear susceptibility of the adsorbate-substrate interaction. Experiments with chain lengths ranging from 1 to 22 showed, that the saturation coverage for thiols longer than hexanethiol is equal.

scholarly journals Table-top extreme ultraviolet second harmonic generation

2021 ◽  
Vol 7 (21) ◽  
pp. eabe2265
Author(s):  
Tobias Helk ◽  
Emma Berger ◽  
Sasawat Jamnuch ◽  
Lars Hoffmann ◽  
Adeline Kabacinski ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
First Principles ◽  
Extreme Ultraviolet ◽  
Second Harmonic ◽  
High Harmonic ◽  
Electronic Structure Calculations ◽  
Free Electron Lasers ◽  
X Ray ◽  
Structure Calculations

The lack of available table-top extreme ultraviolet (XUV) sources with high enough fluxes and coherence properties has limited the availability of nonlinear XUV and x-ray spectroscopies to free-electron lasers (FELs). Here, we demonstrate second harmonic generation (SHG) on a table-top XUV source by observing SHG near the Ti M2,3 edge with a high-harmonic seeded soft x-ray laser. Furthermore, this experiment represents the first SHG experiment in the XUV. First-principles electronic structure calculations suggest the surface specificity and separate the observed signal into its resonant and nonresonant contributions. The realization of XUV-SHG on a table-top source opens up more accessible opportunities for the study of element-specific dynamics in multicomponent systems where surface, interfacial, and bulk-phase asymmetries play a driving role.

Numerical study of the second harmonic generation in FELs

2021 ◽  
Vol 28 (3) ◽  
Author(s):  
A. M. Kalitenko
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Free Electron ◽  
Numerical Study ◽  
Second Harmonic ◽  
Three Dimensional ◽  
X Ray ◽  
Linac Coherent Light Source ◽  
The Individual ◽  
Analytical Expressions

A numerical study of the effect of betatron oscillations on the second harmonic generation in free-electron lasers (FELs) is presented. Analytical expressions for the effective coupling strength factors are derived that clearly distinguish all contributions in subharmonics and each polarization of the radiation. A three-dimensional time-dependent numerical FEL code that takes into account the main FEL effects and the individual contribution of each electron to the second harmonic generation is presented. Also, the X- and Y-polarizations of the second harmonic are analyzed. The second harmonic was detected in experiments at the Advanced Photon Source (APS) Low Energy Undulator Test Line (LEUTL) and Linac Coherent Light Source (LCLS) in the soft X-ray regime. The approach presented in the article can be useful for a comprehensive study and diagnostics of XFELs. In the paper, the LCLS and Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL) experiments are modeled. The simulation results are in a good agreement with the experimental data.

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