Comparison of scattering and reflection SFG: a question of phase-matching

被引：41

作者：

de Aguiar, Hilton B. ^{[1
,2
]}

Scheu, Ruediger ^{[1
,2
]}

Jena, Kailash C. ^{[1
,2
]}

de Beer, Alex G. F. ^{[2
]}

Roke, Sylvie ^{[1
,2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Sch Engn STI, Inst Bioengn IBI, Lab Fundamental BioPhoton LBP, CH-1015 Lausanne, Switzerland

[2] Max Planck Inst Intelligent Syst, D-70569 Stuttgart, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2012年 / 14卷 / 19期

基金：

欧洲研究理事会;

关键词：

SUM-FREQUENCY GENERATION; NONLINEAR-OPTICAL SPECTROSCOPY; SODIUM DODECYL-SULFATE; MAXIMUM-ENTROPY METHOD; 2ND-HARMONIC GENERATION; VIBRATIONAL SPECTROSCOPY; PARTICLE-SIZE; SURFACE; INTERFACES; WATER;

D O I：

10.1039/c2cp40324b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present a comparison between sum frequency scattering (SFS) and reflection mode sum frequency generation (R-SFG). We have used scattering theory to describe both scattering experiments as well as reflection mode experiments. The interfacial vibrational spectrum of nanoscopic oil droplets dispersed in water was probed with SFS as well as with R-SFG. Spectra recorded in phase-matched R-SFG mode and spectra recorded with SFS from the same sample are different, which shows that different interfaces are measured. Scattering spectra at different scattering angles agree with nonlinear light scattering theory. We further present experiments with polymer films aimed at quantifying the comparative strength of R-SFG and SFS experiments.

引用

页码：6826 / 6832

页数：7

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