Novel tools for ultrafast spectroscopy

Novel tools for ultrafast spectroscopy

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Novel tools for ultrafast spectroscopy

dc.contributor.advisor	Li, Elaine
dc.creator	Jarvis, Thomas William
dc.date.accessioned	2012-02-06T22:44:36Z
dc.date.available	2012-02-06T22:44:36Z
dc.date.created	2011-12
dc.date.issued	2012-02-06
dc.date.submitted	December 2011
dc.identifier.uri	http://hdl.handle.net/2152/ETD-UT-2011-12-4456
dc.description.abstract	Exciton 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.mimetype	application/pdf
dc.language.iso	eng
dc.subject	Spectroscopy
dc.subject	Ultrafast spectroscopy
dc.subject	Ultra-fast spectroscopy
dc.subject	Exciton
dc.subject	Exciton dynamics
dc.subject	Exciton optics
dc.subject	Excitons
dc.subject	Four-wave mixing
dc.subject	Four wave mixing
dc.subject	GaAs
dc.subject	Gallium Arsenide
dc.subject	Quantum well
dc.subject	Semiconductor
dc.subject	Acousto-optic
dc.subject	Acousto optic
dc.subject	Acousto-optic modulation
dc.subject	Agile frequency
dc.subject	Direct digital synthesis
dc.subject	Lock-in detection
dc.subject	Lock in detection
dc.subject	Two-dimensional
dc.subject	Two dimensional
dc.subject	Fourier transform
dc.subject	Multi-dimensional
dc.subject	Multi dimensional
dc.subject	Coherent
dc.subject	Dephasing
dc.subject	Relaxation
dc.subject	Many body
dc.subject	Many-body
dc.subject	Physics
dc.subject	Correlation
dc.subject	Plasmon
dc.subject	Surface plasmon
dc.subject	Polariton
dc.subject	Surface
dc.subject	Hybrid
dc.subject	Coupling
dc.subject	Mode
dc.subject	Grating
dc.subject	Nanostructure
dc.subject	Nano-structure
dc.subject	Nano structure
dc.subject	Reflection
dc.subject	Mode
dc.subject	geometry
dc.subject	Transmission
dc.subject	Variable
dc.subject	Angle
dc.subject	tuning
dc.subject	Tunable
dc.subject	Tuned
dc.subject	Angle-tuning
dc.subject	Angle-tunable
dc.subject	Beam
dc.subject	controllable
dc.subject	Control
dc.title	Novel tools for ultrafast spectroscopy
dc.date.updated	2012-02-06T22:45:37Z
dc.identifier.slug	2152/ETD-UT-2011-12-4456
dc.contributor.committeeMember	Fink, Manfred
dc.contributor.committeeMember	Keto, John
dc.contributor.committeeMember	Lim, Sang-Hyun
dc.contributor.committeeMember	Shih, Chih-Kang
dc.contributor.committeeMember	Sitz, Greg
dc.description.department	Physics
dc.type.genre	thesis
dc.type.material	text
thesis.degree.department	Physics
thesis.degree.discipline	Physics
thesis.degree.grantor	University of Texas at Austin
thesis.degree.level	Doctoral
thesis.degree.name	Doctor of Philosophy