Modeling phonon-polariton generation and control in ferroelectric crystals
Name
535713251-MIT.pdf
Description
Full printable version
Size
17.66 MB
Format
Adobe PDF
Checksum (MD5)
d46bbebcc6d7a0c273c9830c44f40f12
Author(s)
Chen, Zhao, S.M. Massachusetts Institute of Technology
Advisor(s)
Keith A. Nelson and J. David Litster.
Date Issued
2009
Publisher
Massachusetts Institute of Technology
Abstract
In this thesis, we present simulations, using Finite Element Method (FEM), of phonon-polariton generation and coherent control in ferroelectric crystals LiNbO₃ and LiTaO₃ through nonlinear electro-optic interactions with ultrashort laser pulses. This direct space-time monitoring platform is used to investigate the nature of the excitation mechanism, the science of propagation in patterned structure, and the waveform control via multi-dimensional pulse shaping. Compared with previous simulation methods, this platform demonstrates considerable improvement in complex domain by achieving varied accuracy over space based on the level of interest of the region, which may facilitate scientific exploration in high power terahertz generation and polaritonic signal processing.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Physics, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 101-109).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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reproduction or distribution in any format is prohibited without written
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