Frequency Domain Holography of laser wakefields

dc.contributor.advisorDowner, Michael Coffinen
dc.creatorMatlis, Nicholas Hillen
dc.date.accessioned2008-08-28T23:06:47Zen
dc.date.available2008-08-28T23:06:47Zen
dc.date.issued2006en
dc.descriptiontexten
dc.description.abstractIn this dissertation, single-shot measurement of longitudinal and transverse structure of resonantly driven laser wakefields by Frequency Domain Holography (FDH) is demonstrated. Visualization of laser wakefield structure is crucial for understanding the complex dynamics of the mutual interaction between the driving pulse, wake- field density oscillations and accelerated electron bunch. This diagnostic therefor provides a necessary tool for researchers to learn how to control and fine tune the interaction to produce electron beams with desirable properties. Wakefields were measured in a 2 mm Helium gas jet, for electron densities between 1 x 1018 and 6 x 1018 cm−3 , and laser pulses of 30 fs duration and peak powers between 10 TW and 30 TW. Detailed structural features of the wakefields, including radial extent of the wake, longitudinal wake development, and wavefront curvature, as well as features of the accompanying ionization front and plasma column are resolved. Results are compared with PIC simulations, and show a high degree of correspondence. Weaknesses of the current implementation of the technique and extensions to other parameter regimes are discussed.
dc.description.departmentPhysicsen
dc.format.mediumelectronicen
dc.identifierb65464266en
dc.identifier.oclc156500284en
dc.identifier.urihttp://hdl.handle.net/2152/2752en
dc.language.isoengen
dc.rightsCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.subject.lcshLaser beamsen
dc.subject.lcshParticle acceleratorsen
dc.subject.lcshHolographyen
dc.titleFrequency Domain Holography of laser wakefieldsen
dc.type.genreThesisen
thesis.degree.departmentPhysicsen
thesis.degree.disciplinePhysicsen
thesis.degree.grantorThe University of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen

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