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Sum frequency and second harmonic generation from the surface of a liquid microjet.

Authors :
Smolentsev, Nikolay
Yixing Chen
Jena, Kailash C.
Brown, Matthew A.
Roke, Sylvie
Source :
Journal of Chemical Physics. 11/14/2014, Vol. 141 Issue 18, p1-6. 6p. 1 Diagram, 3 Graphs.
Publication Year :
2014

Abstract

The use of a liquid microjet as a possible source of interest for Second Harmonic Generation (SHG) and Sum Frequency Generation (SFG) spectroscopy is examined. We measured non-resonant SHG scattering patterns from the air/water interface of a microjet of pure water and observe a strong enhancement of the SHG signal for certain scattering angles. These enhancements can be explained by the optical properties and the shape of the liquid microjet. SFG experiments at the surface of a liquid microjet of ethanol in air show that it is also possible to measure the coherent vibrational SFG spectrum of the ethanol/air interface in this way. Our findings are useful for future far-UV or X-ray based nonlinear optical surface experiments on liquid jets. In addition, combined X-ray photoelectron spectroscopy and SHG/SFG measurements are feasible, which will be very useful in improving our understanding of the molecular foundations of electrostatic and chemical surface properties and phenomena. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219606
Volume :
141
Issue :
18
Database :
Academic Search Index
Journal :
Journal of Chemical Physics
Publication Type :
Academic Journal
Accession number :
99538425
Full Text :
https://doi.org/10.1063/1.4896996