Spectroscopy of Molecular Monolayers by Resonant Second-Harmonic Generation

作者：Tony F. Heinz, C. K. Chen, D. Ricard, Y. R. Shen · 发表于：Physical Review Letters · 年份：1982 · DOI：10.1103/physrevlett.48.478 · 被引用次数：337 · 研究领域：Spectroscopy and Quantum Chemical Studies、Photochemistry and Electron Transfer Studies、Protein Interaction Studies and Fluorescence Analysis

Spectra of the ${S}_{0}\ensuremath{\rightarrow}{S}_{2}$ electronic transition of rhodamine dyes adsorbed at submonolayer coverages on a fused silica substrate have been obtained by resonant second-harmonic generation. Polarization dependences of the second-harmonic signal have been studied and are used in the construction of a model for the orientation of the adsorbates. A value for the molecular second-order nonlinear polarizability at resonance is deduced.