Dissertation
Using sum rules to guide experiential and theoretical studies of the intrinsic nonlinear-optical susceptibility of organic molecules
Washington State University
Doctor of Philosophy (PhD), Washington State University
12/2007
DOI:
https://doi.org/10.7273/000005724
Abstract
This dissertation combines theoretical and experimental studies of organic molecules
to understand light-matter interactions with the goal of making more efficient nonlinearoptical molecules. We use a finite element method to numerically calculate and optimize the nonlinear-optical susceptibilities of 1-dimensional molecules, which resulted in a new paradigm for fabricating molecules with better nonlinear properties. This approach was used as a guide by researchers to identify and characterize a record-high intrinsic hyperpolarizability. Using the results of a sum rule analysis, we propose a new method for modeling the nonlinear-optical spectra of molecules. We apply our theory to the two-photon absorption cross section of the Air Force dye called AF455, and find that it is consistent with our measurements. The properties of the first two excited states of AF455 determined with a combination of linear absorption spectroscopy and hyper-Rayleigh scattering measurements are sufficient to predict, within experimental uncertainty, the full two-photon absorption spectrum.
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Details
- Title
- Using sum rules to guide experiential and theoretical studies of the intrinsic nonlinear-optical susceptibility of organic molecules
- Creators
- Juefei Zhou
- Contributors
- Mark G. Kuzyk (Chair) - Washington State University, Department of Physics and Astronomy
- Awarding Institution
- Washington State University
- Academic Unit
- Department of Physics and Astronomy
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 137
- Identifiers
- 99901054761701842
- Language
- English
- Resource Type
- Dissertation