Dissertation
Mechanism of self-healing of amplified spontaneous emission in the dye-doped polymer disperse orange 11 dye in PMMA polymer
Washington State University
Doctor of Philosophy (PhD), Washington State University
12/2007
DOI:
https://doi.org/10.7273/000005746
Abstract
We study the mechanisms of photodegradation and self-healing of 1-amino-2- methylanthraquinone (Disperse Orange 11) in solid poly(methyl methacrylate) under 532nm Nd:YAG laser excitation as measured by amplified spontaneous emission (ASE). We used photochromism in conjuction with ASE dynamical studies to gain an understanding of the character of species formed during photodegradation. Based on our experiments, we propose the mechanism of dimer formation from dipole coupled tautomers and summarize our results with an energy level diagram that is consistent with the full set of measurements. We use a simple population dynamics model to explain the proposed mechanism. As expected from our proposed mechanisms we find an intensity-dependent photodegradation rate and a constant recovery rate. This understanding can be used to design materials for devices that are more robust against the common problem of photodegradation.
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Details
- Title
- Mechanism of self-healing of amplified spontaneous emission in the dye-doped polymer disperse orange 11 dye in PMMA polymer
- Creators
- Natnael B. Embaye
- Contributors
- Mark G. Kuzyk (Chair)
- 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
- 134
- Identifiers
- 99901054762201842
- Language
- English
- Resource Type
- Dissertation