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dc.creatorJarvis, Thomas William
dc.date.accessioned2012-02-06T22:44:36Z
dc.date.available2012-02-06T22:44:36Z
dc.date.created2011-12
dc.date.issued2012-02-06
dc.date.submittedDecember 2011
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-12-4456
dc.descriptiontext
dc.description.abstractExciton dynamics in semiconductor nanostructures are dominated by the effects of many-body physics. The application of coherent spectroscopic tools, such as two-dimensional Fourier transform spectroscopy (2dFTS), to the study of these systems can reveal signatures of these effects, and in combination with sophisticated theoretical modeling, can lead to more complete understanding of the behaviour of these systems. 2dFTS has previously been applied to the study of GaAs quantum well samples. In this thesis, we outline a precis of the technique before describing our own experiments using 2dFTS in a partially collinear geometry. This geometry has previously been used to study chemical systems, but we believe these experiments to be the first such performed on semiconductor samples. We extend this technique to a reflection mode 2dFTS experiment, which we believe to be the first such measurement. In order to extend the techniques of coherent spectroscopy to structured systems, we construct an experimental apparatus that permits us to control the beam geometry used to perform four-wave mixing reflection measurements. To isolate extremely weak signals from intense background fields, we extend a conventional lock-in detection scheme to one that treats the optical fields exciting the sample on an unequal footing. To the best of our knowledge, these measurements represent a novel spectroscopic tool that has not previously been described.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.subjectSpectroscopy
dc.subjectUltrafast spectroscopy
dc.subjectUltra-fast spectroscopy
dc.subjectExciton
dc.subjectExciton dynamics
dc.subjectExciton optics
dc.subjectExcitons
dc.subjectFour-wave mixing
dc.subjectFour wave mixing
dc.subjectGaAs
dc.subjectGallium Arsenide
dc.subjectQuantum well
dc.subjectSemiconductor
dc.subjectAcousto-optic
dc.subjectAcousto optic
dc.subjectAcousto-optic modulation
dc.subjectAgile frequency
dc.subjectDirect digital synthesis
dc.subjectLock-in detection
dc.subjectLock in detection
dc.subjectTwo-dimensional
dc.subjectTwo dimensional
dc.subjectFourier transform
dc.subjectMulti-dimensional
dc.subjectMulti dimensional
dc.subjectCoherent
dc.subjectDephasing
dc.subjectRelaxation
dc.subjectMany body
dc.subjectMany-body
dc.subjectPhysics
dc.subjectCorrelation
dc.subjectPlasmon
dc.subjectSurface plasmon
dc.subjectPolariton
dc.subjectSurface
dc.subjectHybrid
dc.subjectCoupling
dc.subjectMode
dc.subjectGrating
dc.subjectNanostructure
dc.subjectNano-structure
dc.subjectNano structure
dc.subjectReflection
dc.subjectMode
dc.subjectgeometry
dc.subjectTransmission
dc.subjectVariable
dc.subjectAngle
dc.subjecttuning
dc.subjectTunable
dc.subjectTuned
dc.subjectAngle-tuning
dc.subjectAngle-tunable
dc.subjectBeam
dc.subjectcontrollable
dc.subjectControl
dc.titleNovel tools for ultrafast spectroscopy
dc.date.updated2012-02-06T22:45:37Z
dc.identifier.slug2152/ETD-UT-2011-12-4456
dc.description.departmentPhysics
dc.type.genrethesis*
thesis.degree.departmentPhysics
thesis.degree.disciplinePhysics
thesis.degree.grantorUniversity of Texas at Austin
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy


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