Enhanced Second Harmonic Generation from an Organic Self-Assembled Eutectic Binary Mixture: A Case Study with 3-Nitrobenzoic and 3,5-Dinitrobenzoic Acids

2015 ◽  
Vol 15 (2) ◽  
pp. 946-960 ◽  
Author(s):  
Florent Simon ◽  
Simon Clevers ◽  
Gabin Gbabode ◽  
Nicolas Couvrat ◽  
Valérie Agasse-Peulon ◽  
...  
Keyword(s):  
Binary Mixture ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Self Assembled

Probing nonlinear optical coefficients in self-assembled peptide nanotubes

2017 ◽  
Vol 19 (4) ◽  
pp. 3084-3093 ◽  
Author(s):  
Soma Khanra ◽  
Kartik Ghosh ◽  
Fabio F. Ferreira ◽  
Wendel A. Alves ◽  
Francesco Punzo ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Peptide Nanotubes ◽  
Self Assembled ◽  
Individual Self

Second harmonic generation polarimetry from individual self-assembled peptide nanotubes is used to obtain the ratio of the nonlinear coefficients.

Frequency-Dependent Second Harmonic Generation in Acentric Chromophoric Self-Assembled NLO Materials

1994 ◽  
Vol 351 ◽  
Author(s):  
Shlomo Yitzchaik ◽  
Paul M. Lundquist ◽  
Weiping Lin ◽  
David R. Kanis ◽  
Mark A. Ratner ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Self Assembly ◽  
Second Harmonic ◽  
Second Order ◽  
Frequency Dependent ◽  
Aligned Arrays ◽  
Nlo Materials ◽  
Charge Transfer Excitation ◽  
Self Assembled

ABSTRACTAn attractive and challenging approach to the construction of robust, thin film materials with large second-order optical nonlinearities is the covalent self-assembly of aligned arrays of high-β molecular chromophores into multilayer superlattices. In this paper, we describe the dispersion of second harmonic generation (SHG) in a self-assembled (SA) monolayer containing a stilbazolium chromophore. The frequency-dependent measurements were performed on 25 Å thick monolayers on glass using a tunable (0.4–2 μm) light source based on optical parametric amplification (OPA). The SHG spectrum contains a clear two-photon resonance at hω = 1.3eV. The maximum in the second-order susceptibility coincides with a low energy chromophore-centered charge-transfer excitation at 480 nm. The experimental SHG dispersion values compare favorably with theoretical results computed using a sum-over-states (SOS) formalism. However, the measured values exhibit a somewhat broader band response than the theoretical curve, and the origin of this behavior is discussed.

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