A study of electron and phonon dynamics by broadband two-dimensional THz time-domain spectroscopy

Authors
Fu, Zhengping
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Other Contributors
Yamaguchi, Masashi
Koratkar, Nikhil A. A.
Persans, Peter D., 1953-
Wang, G.-C. (Gwo-Ching), 1946-
Issue Date
2016-05
Keywords
Physics
Degree
PhD
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This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
In this thesis, the coherent phonons excited by THz pulses are experimentally demonstrated for the first time in both GaAs and InSb. The resonant excitation using THz pulses enables the coherent control of the lattice motion via direct interaction of atoms and electromagnetic wave, without inducing electronic transition as reported in the optical excitation of coherent phonons. The classic model is used to explain both excitation and detection mechanisms. An increase of the damping rate of the coherent lattice motion due to higher carrier density is observed in our experiment.
Description
May 2016
School of Science
Department
Dept. of Physics, Applied Physics, and Astronomy
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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