RADIATIVE COUPLING AND DECAY PROPERTIES OF QUANTUM CONFINED SEMICONDUCTORS

Persistent Link:
http://hdl.handle.net/10150/194915
Title:
RADIATIVE COUPLING AND DECAY PROPERTIES OF QUANTUM CONFINED SEMICONDUCTORS
Author:
Sweet, Julian
Issue Date:
2009
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:
Several contemporary research topics on the subject of light-matter coupling are addressed. Through a variety of experimental methods, the emissive and carrier correlation properties of both quantum dots (QD) and quantum wells (QW) are explored.The radiative decay properties of self-assembled indium arsenide (InAs) quantum dots grown by molecular beam epitaxy (MBE) are discussed. The measurement of radiative lifetime is used to determine dipole moment. In addition, evidence is presented of radiative lifetime reduction for quasi-resonant and strictly resonant time-resolved measurements. This lessening is attributed to carrier correlations which exist during resonant excitation but that are not present during above-band pumping. The data do not support the assertion that the shorter radiative lifetime is caused by a superradiant effect.MBE-grown Fibonacci sequence QWs exhibiting novel polaritonic properties are also introduced. These quasiperiodic structures stand apart from periodic structures in that they possess nonperiodic long-range order. Subsequent investigation of nonlinear reflectivity in the quasiperiodic structure showed excellent agreement with theoretical predictions. Of particular interest is the narrow deep dip close to the heavy hole resonance as well as the valley between the heavy hole and light hole resonance positions.
Type:
text; Electronic Dissertation
Keywords:
Optical Sciences
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Optical Sciences; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Gibbs, Hyatt M.; Khitrova, Galina
Committee Chair:
Gibbs, Hyatt M.

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleRADIATIVE COUPLING AND DECAY PROPERTIES OF QUANTUM CONFINED SEMICONDUCTORSen_US
dc.creatorSweet, Julianen_US
dc.contributor.authorSweet, Julianen_US
dc.date.issued2009en_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.abstractSeveral contemporary research topics on the subject of light-matter coupling are addressed. Through a variety of experimental methods, the emissive and carrier correlation properties of both quantum dots (QD) and quantum wells (QW) are explored.The radiative decay properties of self-assembled indium arsenide (InAs) quantum dots grown by molecular beam epitaxy (MBE) are discussed. The measurement of radiative lifetime is used to determine dipole moment. In addition, evidence is presented of radiative lifetime reduction for quasi-resonant and strictly resonant time-resolved measurements. This lessening is attributed to carrier correlations which exist during resonant excitation but that are not present during above-band pumping. The data do not support the assertion that the shorter radiative lifetime is caused by a superradiant effect.MBE-grown Fibonacci sequence QWs exhibiting novel polaritonic properties are also introduced. These quasiperiodic structures stand apart from periodic structures in that they possess nonperiodic long-range order. Subsequent investigation of nonlinear reflectivity in the quasiperiodic structure showed excellent agreement with theoretical predictions. Of particular interest is the narrow deep dip close to the heavy hole resonance as well as the valley between the heavy hole and light hole resonance positions.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
dc.subjectOptical Sciencesen_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineOptical Sciencesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorGibbs, Hyatt M.en_US
dc.contributor.advisorKhitrova, Galinaen_US
dc.contributor.chairGibbs, Hyatt M.en_US
dc.contributor.committeememberPeyghambarian, Nasseren_US
dc.contributor.committeememberWright, Ewanen_US
dc.identifier.proquest10577en_US
dc.identifier.oclc659752319en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.