Theory of optical nonlinearity in pi-conjugated polymers and related materials.

Persistent Link:
http://hdl.handle.net/10150/186192
Title:
Theory of optical nonlinearity in pi-conjugated polymers and related materials.
Author:
Guo, Dandan.
Issue Date:
1993
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Within the framework of interacting-electron models, the optical nonlinearity in π-conjugated polymers is investigated theoretically. A complete microscopic many-body theory is developed for the mechanism of the third order nonlinearity in these materials. The universality and the predictability of the theory are well established. It is found that the bulk of the optical nonlinearity in conjugated polymers is determined by four essential states although all the excited states are involved. It is also found that electron-electron Coulomb interactions in one-dimensional systems play key roles in the nonlinear optical processes and are responsible for the observed spectroscopic features. The theoretical results are compared with experiments in wide variety of materials and excellent agreements between theory and experiments are obtained. With the essential-state theory, various experiments are explained within a single unified theory for the first time, and many controversies are resolved.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Dissertations, Academic.; Optics.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Physics; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Mazumdar, Sumitendra

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleTheory of optical nonlinearity in pi-conjugated polymers and related materials.en_US
dc.creatorGuo, Dandan.en_US
dc.contributor.authorGuo, Dandan.en_US
dc.date.issued1993en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractWithin the framework of interacting-electron models, the optical nonlinearity in π-conjugated polymers is investigated theoretically. A complete microscopic many-body theory is developed for the mechanism of the third order nonlinearity in these materials. The universality and the predictability of the theory are well established. It is found that the bulk of the optical nonlinearity in conjugated polymers is determined by four essential states although all the excited states are involved. It is also found that electron-electron Coulomb interactions in one-dimensional systems play key roles in the nonlinear optical processes and are responsible for the observed spectroscopic features. The theoretical results are compared with experiments in wide variety of materials and excellent agreements between theory and experiments are obtained. With the essential-state theory, various experiments are explained within a single unified theory for the first time, and many controversies are resolved.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectDissertations, Academic.en_US
dc.subjectOptics.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairMazumdar, Sumitendraen_US
dc.contributor.committeememberGarcia, J.D.en_US
dc.contributor.committeememberMcIntyre, Laurenceen_US
dc.contributor.committeememberParmenter, Roberten_US
dc.contributor.committeememberPeyghambrian, Nesseren_US
dc.identifier.proquest9322693en_US
dc.identifier.oclc715421763en_US
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